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|title=Indriya

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|keywords=Indriya,Indriya in ayurveda,Indriya meaning,Categories of Indriya,Indriyopakramaniya Adhyaya,Indriya Sthana,eleven Indriya in human being

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|keywords=Indriya,Indriya in ayurveda,Indriya meaning,Categories of Indriya,Indriyopakramaniya Adhyaya,Indriya Sthana,eleven Indriya in human being, sense organs, motor organs, process of knowledge, perception, prajnaparadha,

|description=The word Indriya literally means organ, sense, force, vigor

|image=http://www.carakasamhitaonline.com/resources/assets/ogimgs.jpg

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The term “indriya” refers to the sensory faculties (jnanendriya) (SAT-B.192) and motor faculties (karmendriya) (SAT-B.186) along with the internal system of perception of knowledge. Ayurveda describes the concept of indriya in a broader perspective than the structural presence of sense organs like eyes, ears, nose, skin, and tongue. Each sense has a capacity to connect with the consciousness and develop as a super sense in the presence of mind and soul. Intellect is also involved in the process of perception. This article describes the holistic concept of indriya and its contemporary utility in the preservation of health.

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The term “indriya” refers to the sensory faculties (jnanendriya) (SAT-B.192)<ref name=sat>Available from http://namstp.ayush.gov.in/#/sat</ref> and motor faculties (karmendriya) (SAT-B.186)<ref name=sat/> along with the internal system of perception of knowledge. Ayurveda describes the concept of indriya in a broader perspective than the structural presence of sense organs like eyes, ears, nose, skin, and tongue. Each sense has a capacity to connect with the consciousness and develop as a super sense in the presence of mind and soul. Intellect is also involved in the process of perception. This article describes the holistic concept of indriya and its contemporary utility in the preservation of health.

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==Etymology, derivation, and synonyms ==

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The Sanskrit word Indriya means – “ that which is related to, or originated from ‘indra’ or created by the supreme power”. It means prana or vital life force. [Chakrapani on Cha.Sa.[[Indriya Sthana]] 1/1-2].

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The Sanskrit word Indriya means – “ that which is related to, or originated from ‘indra’ or created by the supreme power”.<ref>Jha Srujan. Amarkosha online application</ref> It means prana or vital life force. [Chakrapani on Cha.Sa.[[Indriya Sthana]] 1/1-2].

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Indriya is the entity that works in the presence of mind and consciousness to perceive any knowledge or memories.

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Indriya is the entity that works in the presence of mind and consciousness to perceive any knowledge or memories.<ref>Samkhya Tatva Koumudi - 26</ref>

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The word indriya is denoted by synonyms like hrushikam, vishayi, aksham, karanam, and grahanam. All these terms refer to the sensory and motor faculty along with their internal processing system.

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The word indriya is denoted by synonyms like hrushikam, vishayi, aksham, karanam, and grahanam. All these terms refer to the sensory and motor faculty along with their internal processing system.<ref>Jha Srujan. Shabdakalpadruma online application</ref>

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</div>

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== Meanings in different contexts: ==

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== Meanings in different contexts==

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*The term indriya is also used to denote the semen virile (shukra). It also indicates any powerful act or bodily power.

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*The term indriya is also used to denote the semen virile ([[shukra]]). It also indicates any powerful act or bodily power.<ref>Monier-Williams, available from -Jha Srujan. Amarkosha online application</ref>

*The presence of “indriya” is the criteria to determine the presence of consciousness (chetana) in a substance. [Cha. Sa. [[Sutra Sthana]] 1/48]

*The terms Indriya and [[Atma]] are used interchangeably in some contexts. [Cha. Sa. [[Sutra Sthana]] 8/18]

*The term indriya mainly refers to the sensory faculties. [Cha. Sa. [[Sutra Sthana]] 8/14] They are considered as the instruments (karana) for the knowledge in the form of direct perception (pratyaksha jnana). [Cha. Sa. [[Vimana Sthana]] 4/4]

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</div>

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==Types or classification ==

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Indriya are mainly classified into three categories:

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~~'''a)~~Five sensory faculties (pancha jnanendriyani)~~''' - which~~ include

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===Five sensory faculties (pancha jnanendriyani)===

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These include

*Auditory faculty (shrotrendriya)

*Tactile faculty(sparshanendriya)

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*Olfactory faculty(ghranendriya)[Cha.Sa.[[Sutra Sthana]] 8/8]

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~~b)'''~~Five motor faculties (pancha karmendriyani)~~'''-which~~ include

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===Five motor faculties (pancha karmendriyani)===

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These include

*Upper limbs and faculties regulating activities accomplished by it (hasta)

*Lower limbs and faculties regulating activities accomplished by it (pada)

*Rectum and associated faculties (guda)

*Primary and secondary sex organs with faculties controlling its activities (upastha)

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*Tongue with peripheral speech apparatus and associated faculties (vagindriya)

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*Tongue with peripheral speech apparatus and associated faculties (vagindriya)[Cha. Sa. [[Sharira Sthana]] 1/25-26]

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[ Cha. Sa. Sharira Sthana 1/25-26]

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~~c)'''~~Internal faculty (antah karana)~~''' - internal~~ system of perception and cognition~~. It~~ includes the inputs from the sensory faculties and their processing by the mind (manas), intellect (buddhi), and ego (ahamkara).

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===Internal faculty (antah karana)===

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Internal system of perception and cognition includes the inputs from the sensory faculties and their processing by the mind (manas), intellect (buddhi), and ego (ahamkara).

Mind (manas) is known as supreme faculty (atindriya) or dual faculty (ubhayendriya) which is having control over both sensory as well as motor faculties. [A.S.Sharira Sthana 5/44]

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~~===Formation of indriya===~~

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</div>

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~~'''Panchchabhautika constitution'''~~

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Indriya are formed from the five greater elements ([[panchamahabhuta]]). So, each of them has an affinity towards a particular sense of perception in an object which is having a similar elemental constitution. [Su. Sa. Sharira Sthana 1/15]

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==Formation of indriya==

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===Panchchabhautika constitution===

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Indriya are formed from the five greater elements ([[panchamahabhuta]]). So, each of them has an affinity towards a particular sense of perception in an object which is having a similar elemental constitution. [Su.Sa.Sharira Sthana 1/15]

E.g.: visual faculty (chakshurindriya) have an affinity towards the visual aspect of an object. So, it receives the signals about colour, size, and shape of an object and transmit this information to the respective higher center (chakshurindriya budhi)

*In embryonic development, indriya formation happens during the third month. [Cha.Sa.[[Sharira Sthana]] 4/11]

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</div>

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===Special locations of Indriya===

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==Special locations of Indriya==

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In the human body, each sensory faculty (indriya) is located in a particular area with a predominance of the particular [[mahabhuta]].

The only exception for this is tactile faculty (sparshanendriya) which is spread all over the body.

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===Pentad of senses (Indriya pancha-panchaka)===

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~~'''~~Pentad of senses (Indriya pancha-panchaka)

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~~'''~~

{| class= "wikitable" |}

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|Ghranendriya(Olfactory sense)||[[Prithvi]]||Gandha (smell) ||Nose||Sense of olfaction

|}

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</div>

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==Difference between sense (indriya) and organ (indriya adhishtana)<ref>Aniket A. Shilwant, Indriya Shaarir. Life Sciences Medical Publisher, Mumbai. 1st Edition, 2018.</ref> ==

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=~~==Difference between sense (indriya) and organ (indriya adhishtana) ===~~

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To know physiological process of sensation, it is important to know the difference between sense and sense organs.

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~~'''~~Sense (indriya)~~:'''~~

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===Sense (indriya)===

It is a subtle instrumental form responsible for the manifestation of consciousness in a living being in the presence of mind (mana) and soul (atma). It communicates messages of the external world to the internal world in the physical body. It denotes the presence of vital force (prana) within a living body.

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~~'''~~Sense organ (indriya adhisthana)~~:'''~~

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===Sense organ (indriya adhisthana)===

It is a structural, materialistic entity with particular dimensions. It is the physical abode to express the sensation.

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~~'''Table:~~ Difference between sense and sense organs

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===Difference between sense and sense organs===

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~~'''~~

{| class= "wikitable" |}

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|4||Primary contact with the source of knowledge ||Secondary contact with the source of knowledge

|}

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</div>

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===Functioning of indriya===

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==Functioning of indriya==

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~~'''Process of perception of knowledge'''~~

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===Process of perception of knowledge===

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As per ayurvedic perspectives, the process of cognition starts from within a person. The soul expresses will for the perception of knowledge through the mind. The mind then connects with the particular sense to fulfill the will. The sense searches and connects with the source to know about that particular object. The sense organ-specific intellect plays an important role in deciding good/bad, correct/incorrect things for the living being. Thus, the process of perception of knowledge is completed by coordination of sense organ, sense, intellect, mind, and soul. The knowledge gained by the soul is ‘self-knowledge’. It is stored in the memory and reminded whenever required.

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The five senses and their subtlest physical presence in the body can be presented in view of contemporary medical knowledge as below:

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~~'''Table:~~ Sense organs and their physical centers in body~~'''~~

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===Sense organs and their physical centers in body===

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{|class= "wikitable"|}

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{| class= "wikitable" |}

|-

!Sr. No!!Five senses (Indriya)!!Five sense material (Indriya dravya)!!Five sense organs (Indriya adhishthana)!!Five sense objects (Indriya artha)!!Five sense perception (Indriya buddhi)

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|}

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~~'''~~Motor organs (karmendriya)~~'''~~

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===Motor organs (karmendriya)===

The motor organs are equally important to perform activities and communication. These organs play role in expressing inner feelings to outer world. The following table shows motor organs and their functions.

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~~'''Table:~~ Motor organs (karmendriya) and their functions~~'''~~

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===Motor organs (karmendriya) and their functions===

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{|class= "wikitable"|}

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{| class= "wikitable" |}

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!Sr.No!! Name of the motor organ !! Body part or organ !! Related controlling area in the brain !! Activity

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|1||Speech (vagendriya) || Tongue, receptors at Peripheral Speech apparatus (Larynx with Vocal cords)|| Broca’s area

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|1||Speech (vagendriya) || Tongue, receptors at Peripheral Speech apparatus (Larynx with Vocal cords)|| Broca’s area (area no. 44, 45), central speech apparatus (sensory & motor areas for speech) || Phonation

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(area no. 44, 45), central speech apparatus (sensory & motor areas for speech) || Phonation

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|2|| Giving (pani/hasta) || Hands, receptors at Upper extremity||Primary & premotor area(area no. 4, 4s, 6a, 6b), Areas of spino cerebellum & motor cerebral cortex || Neuromuscular coordination to give, receive, grasp,hold

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|5||Reproduction (upastha)||Sex organs and genitalia, receptors|| Association area, Hypothalamus, Limbic system, Centre of arousal in Hypothalamus,Limbic system ||Satisfaction, pleasure, reproduction

|}

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</div>

== Similarity of receptor theory with indriya ==

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Receptors are specialized materialistic structural ~~interface~~ made up of proteins. They have ability to receive and transduce the signals received. This ability to transform and convert any form of energy into an electrical energy makes the receptor to behave as ‘biological transducers’. These can get saturated due to finite number of binding sites. They have high affinity towards respective ligands within physiological limits and concentrations. The impulse generated by receptors ~~are~~ further carried to higher centers situated in brain and spinal cord to analyze and interpret the stimulus. This conduction of impulse on reaching brain may either have or do not have conscious perception of knowledge.

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Receptors are basically sensitized structures or cells, that carry specialized set of functions such as – can induce cell growth, division and death; regulate cell permeability; regulates cell binding; cell ~~signalling~~, immune responses and many more activities. The receptors have properties of excitability, specificity, discrimination and conductivity.

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Receptors are specialized materialistic structural interfaces made up of proteins. They have the ability to receive and transduce the signals received. This ability to transform and convert any form of energy into electrical energy makes the receptor behave as ‘biological transducers’. These can get saturated due to a finite number of binding sites. They have a high affinity towards respective ligands within physiological limits and concentrations.<ref>Alberts B, Bray D, et.al , Essential Cell Biology,New York, NY, USA: Garland Science, 4th edition,2014, Pg. No. 534</ref> The impulse generated by receptors is further carried to higher centers situated in the brain and spinal cord to analyze and interpret the stimulus. This conduction of impulse on reaching the brain may either have or do not have a conscious perception of knowledge.

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The above observations and discussion indicate striking similarities between mechanism of indriya and receptors. The processes of acquiring knowledge, memory and various physiological reactions can be seen in terms of indriya and receptor theory.

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The existence, structural modifications and functional responsibilities of receptors can be justified by ~~more~~ deeper perspectives. The excitability of receptors is manifested due to presence of state of consciousness (chetana adhishtana bhutam). ~~Specificity~~ of receptors and discrimination ability is due to similar elemental constitution (samana tulya yonitva). ~~Conductivity~~ of impulses through receptors reflects balanced and efficient nervous as well as endocrinal control over all the structures (samayogvahi). Thus, the properties of receptors befit into the mechanisms of perception of knowledge described in Ayurveda. However, this correlation needs more research to establish its utility in treatment of diseases.

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Receptors are basically sensitized structures or cells, that carry a specialized set of functions such as – can induce cell growth, division, and death; regulate cell permeability; regulates cell-binding; cell signaling, immune responses, and many more activities. The receptors have properties of excitability, specificity, discrimination, and conductivity.

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The above observations and discussion indicate striking similarities between the mechanism of indriya and receptors.<ref>Aniket Anil Shilwant, Role of indriya in cognition as explained in Ayurveda with reference to receptors, International Journal of Ayurveda and Pharma Research, 2020, 8(6), 23-30.https://ijapr.in/index.php/ijapr/article/view/1513</ref> The processes of acquiring knowledge, memory, and various physiological reactions can be seen in terms of indriya and receptor theory.

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The existence, structural modifications, and functional responsibilities of receptors can be justified by deeper perspectives. The excitability of receptors is manifested due to the presence of a state of consciousness (chetana adhishtana bhutam). The specificity of receptors and discrimination ability is due to a similar elemental constitution (samana / tulya yonitva). The conductivity of impulses through receptors reflects balanced and efficient nervous as well as endocrinal control over all the structures (samayogvahi). Thus, the properties of receptors befit into the mechanisms of perception of knowledge described in Ayurveda. However, this correlation needs more research to establish its utility in the treatment of diseases.

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</div>

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==Importance in examination of patients ==

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Indriya are the means of direct observation. (pratyaksha jnana) [Cha. Sa. [[Vimana Sthana]] 4/4], [Cha. Sa. [[Vimana Sthana]] 8/39] They are the tools that provide information to the physician about health condition of a person. Therefore, a physician shall develop his senses to access the knowledge about patient and diseases.

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Indriya are the means of direct observation. (pratyaksha jnana) [Cha. Sa. [[Vimana Sthana]] 4/4], [Cha. Sa. [[Vimana Sthana]] 8/39] They are the tools that provide information to the physician about the health condition of a person. Therefore, a physician shall develop his senses to access the knowledge about patient and diseases.

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The physician should use his five senses for examining the patient, diagnosis of disease, and elicit the features of the morbidity in the patient. [Su. Sa. Sutra Sthana 10/5]

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E.g.:- size, shape, colour etc. of a swelling, colour and nature of discharge from wound are directly observed through visual faculty (chakshrurindriya).

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Different sounds produced in body like ~~heartbeat~~, bowel sounds, sound produced from joints etc. are assessed using auditory faculty (shrotrendriya). [Cha. Sa. [[Vimana Sthana]] 4/7]

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E.g.:- size, shape, colour, etc. of swelling, colour, and nature of discharge from a wound are directly observed through visual faculty (chakshrurindriya).

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Different sounds produced in the body like heartbeats, bowel sounds, the sound produced from joints, etc. are assessed using auditory faculty (shrotrendriya). [Cha. Sa. [[Vimana Sthana]] 4/7]

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</div>

== Diagnosis of diseases of indriya==

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The vitiated [[dosha]] affecting indriya can result in two types of pathology.

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a) Mild or temporary damage (upatapa)

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b) Complete and permanent damage (upaghata) [ Cha. Sa. [[Sutra Sthana]] 28/20]

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a) Mild or temporary damage (upatapa)

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b) Complete and permanent damage (upaghata) [Cha. Sa. [[Sutra Sthana]] 28/20]

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</div>

===Weakness of indriya (indriya daurbalya) ===

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The indriya become weak and less efficient due to abnormal increase of [[pitta]] [[dosha]] and decrease of [[vata]] and [[kapha]] dosha. [Cha. Sa. Sutra Sthana 17/60], [Su. Sa. Sutra Sthana 15 /13]. The weakness may be either due to anatomical abnormality of the structural abode of these faculties or the functional abnormality in their controlling system. [Dalhana, Su. Sa. Sutra Sthana 15 /13].

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The important cause of this condition is consumption of incompatible foods (viruddha ahara). [Su. Sa. Sutra Sthana 20/19]. Studies have shown that dietary intake of green leafy vegetables, glycaemic index, and omega-3 fatty acid, as well as overall dietary pattern can influence the risk factors of visual impairment. Low intakes of fat and protein have been associated with hearing discomfort.

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The indriya become weak and less efficient due to abnormal increase of [[pitta]] [[dosha]] and decrease of [[vata]] and [[kapha]] dosha. [Cha. Sa. [[Sutra Sthana]] 17/60], [Su. Sa. Sutra Sthana 15 /13].The weakness may be either due to anatomical abnormality of the structural abode of these faculties or the functional abnormality in their controlling system. [Dalhana, Su. Sa. Sutra Sthana 15 /13].

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The important cause of this condition is the consumption of incompatible foods (viruddha ahara). [Su. Sa. Sutra Sthana 20/19].

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Studies have shown that dietary intake of green leafy vegetables, glycaemic index, and omega-3 fatty acid, as well as overall dietary pattern, can influence the risk factors of visual impairment.<ref>Broadhead, G. K., Hong, T., Bahrami, B., Flood, V., Liew, G., & Chang, A. A. (2020). Diet and risk of visual impairment: a review of dietary factors and risk of common causes of visual impairment. Nutrition Reviews.https://doi.org/10.1093/nutrit/nuaa100</ref> Low intakes of fat and protein have been associated with hearing discomfort.<ref>Kim SY, Sim S, Kim HJ, Choi HG. Low-fat and low-protein diets are associated with hearing discomfort among the elderly of Korea. Br J Nutr. 2015;114(10):1711–7</ref>

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</div>

===Complete functional loss of indriya ===

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When abnormally increased [[vata]] [[dosha]] affects the sensory faculties, they have a total loss of function (indriya vadha). [Cha.Sa.[[Chikitsa Sthana]] 28/29], [Su. Sa. Nidana Sthana 1/24]

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When the total loss of senses (indriya nasha) is associated with any disease condition, it indicates the bad prognosis of the disease. [Cha. Sa. [[Sutra Sthana]] 10/20]

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When abnormally increased [[vata]] [[dosha]] affects the sensory faculties, they have a total loss of function (indriya vadha).[Cha.Sa.[[Chikitsa Sthana]] 28/29], [Su. Sa. Nidana Sthana 1/24]

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• Loss of function of sensory faculties (indriya nasha) is mentioned as a diagnostic feature in severe jwara. [Cha. Sa. [[Chikitsa Sthana]] 3/51]

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• When the poison (visha) gets accumulated in large intestine (pakwashaya), it produces disorders in the functioning of sensory faculties. [Su. Sa. Kalpa Sthana 1/42]

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When the total loss of senses (indriya nasha) is associated with any disease condition, it indicates the bad prognosis of the disease. [Cha.Sa.[[Sutra Sthana]] 10/20]

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• Excessive administration of nasal errhines (nasya) results in dysfunction of sensory faculties. [Su. Sa. Chikitsa Sthana 40/ 40]

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• In diseases due to excessive nourishment (santarpanottha vyadhi), due to aggravation of [[kapha]] [[dosha]], diminished functioning of sensory faculties is seen. [Cha. Sa. [[Sutra Sthana]] 23/17] It is advised to perform therapeutic emesis (vamana) in case of [[kapha]] predominant fever (jwara) for correcting the functions of sensory faculties. [ Su. Sa. Uttara Tantra 39/129]

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*Loss of function of sensory faculties (indriya nasha) is mentioned as a diagnostic feature in severe jwara.[Cha.Sa.[[Chikitsa Sthana]] 3/51]

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Improper indulgence in sensory and motor activities (asatmya indriyartha samyoga) :

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*When the poison (visha) gets accumulated in the large intestine (pakwashaya), it produces disorders in the functioning of sensory faculties. [Su. Sa. Kalpa Sthana 1/42]

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Improper, less or excess indulgence in sensory and motor activities is an important fundamental cause of any disease. [Cha. Sa. [[Sutra Sthana]] 8/15] The diseases related to indriya (aindriyaka vyadhi) are caused by non – utilization (ayoga), excessive utilization (atiyoga) and malpractice (mithya yoga) of sense or motor faculties. [ Cha. Sa. [[Sharira Sthana]] 1/128]

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*Excessive administration of nasal errhines (nasya) results in dysfunction of sensory faculties. [Su. Sa. Chikitsa Sthana 40/ 40]

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== Effect of ~~ageing~~ on indriya ==

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*In diseases due to excessive nourishment (santarpanottha vyadhi), due to aggravation of [[kapha]] [[dosha]], diminished functioning of sensory faculties is seen. [Cha. Sa. [[Sutra Sthana]] 23/17] It is advised to perform therapeutic emesis (vamana) in case of [[kapha]] predominant fever (jwara) for correcting the functions of sensory faculties. [ Su. Sa. Uttara Tantra 39/129]

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The power of sensory and motor faculties decreases with age. It is evident that after the age of forty years, the power starts decreasing gradually and it becomes more evident after age of seventy years. [Su. Sa. Sutra Sthana 35/29] Rasayana (rejuvenation) therapies shall be started well in advance at younger age to prevent this loss due to ~~ageing~~.

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In a research study, it is found that an increase in the threshold for odour detection, lower perceived odour intensity, and a decreased ability to identify food-related odours occur in old age. Current research suggests that some nutritional deficiencies (e.g. zinc) are associated with taste disturbances in older individuals.

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==Improper indulgence in sensory and motor activities (asatmya indriyartha samyoga) ==

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Improper, less or excess indulgence in sensory and motor activities is an important fundamental cause of any disease. [Cha. Sa. [[Sutra Sthana]] 8/15] The diseases related to indriya (aindriyaka vyadhi) are caused by non – utilization (ayoga), excessive utilization (atiyoga) and malpractice (mithya yoga) of sense or motor faculties. [ Cha. Sa. [[Sharira Sthana]] 1/128]

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</div>

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== Effect of aging on indriya ==

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The power of sensory and motor faculties decreases with age. It is evident that after the age of forty years, the power starts decreasing gradually and it becomes more evident after the age of seventy years. [Su. Sa. Sutra Sthana 35/29]

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Rasayana (rejuvenation) therapies shall be started well in advance at a younger age to prevent this loss due to aging.

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In a research study, it is found that an increase in the threshold for odour detection, lower perceived odour intensity, and a decreased ability to identify food-related odours occur in old age.<ref>Rolls BJ, Do chemosensory changes influence food intake in the elderly? Physiol Behav. 1999 Apr;66(2):193-7. doi: 10.1016/s0031-9384(98)00264-9. PMID: 10336143.</ref> Current research suggests that some nutritional deficiencies (e.g. zinc) are associated with taste disturbances in older individuals.<ref>Pisano M, Hilas O, Zinc and Taste Disturbances in Older Adults: A Review of the Literature. Consult Pharm. 2016 May;31(5):267-70. doi: 10.4140/TCP.n.2016.267. PMID: 27178656</ref>

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</div>

== Preservation of health of indriya and management of disease ==

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Daily regimen:

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Various procedures are included in the daily regimen ([[dinacharya]]) to preserve the health of indriya and manage diseases if they occur. [Cha.Sa. Sutra Sthana 5,6] The main objective of observing code of conduct (sadvritta) includes control over sense organs. [Cha.Sa. [[Sutra Sthana]] 8/18] The following table summarizes local procedures that help in this regard.

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===Daily regimen===

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~~Table:~~ Procedures for prevention and management of diseases related to sense and motor organs

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Various procedures are included in the daily regimen ([[dinacharya]]) to preserve the health of indriya and manage diseases if they occur. [Cha.Sa.[[Sutra Sthana]] 5,6] The main objective of observing code of conduct (sadvritta) includes control over sense organs. [Cha.Sa.[[Sutra Sthana]] 8/18]

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Sense organs Local procedures

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Eyes Application of collyrium (anjana), local instillation of liquid medicines(ashchyotana), application of medicines in the form of paste on external surface of eye lid (bidalaka), irrigation with liquids (prakshalana), filling with medicated ghee preparations (tarpana), filling with specially extracted juice of medicinal plants (putapaka)

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The following table summarizes local procedures that help in this regard.

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Ear Filling with oil (karna poorana), fumigation (karna dhoopana)

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Nose Nasal errhines (nasya), Inhalation of medicated smoke (dhoomapana)

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===Procedures for prevention and management of diseases related to sense and motor organs===

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Tongue Filling of oral cavity with oil or medicated liquids (kavala and gandoosha)

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{| class= "wikitable" |}

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Skin, Hands, legs Massage, exercise in proper quantity

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|-

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Speech Observing moral code of conduct, restraining from improper verbal communication

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!Sense organs !! Local procedures

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Rectum and anal canal Non suppression of defecation urge, therapeutic enema (basti)

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|-

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Sex organs Non suppression of urge of micturition, ejaculation, therapeutic enema (basti), therapeutic enema through urinary canal and vagina (uttara basti)

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|Eyes || Application of collyrium (anjana), local instillation of liquid medicines(ashchyotana), application of medicines in the form of paste on external surface of eye lid (bidalaka), irrigation with liquids (prakshalana),filling with medicated ghee preparations (tarpana), filling with specially extracted juice of medicinal plants (putapaka)

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|-

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|Ear || Filling with oil (karna poorana), fumigation (karna dhoopana)

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|-

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|Nose ||Nasal errhines (nasya), Inhalation of medicated smoke (dhoomapana)

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|-

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|Tongue||Filling of oral cavity with oil or medicated liquids (kavala and gandoosha)

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|-

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|Skin, Hands, legs || Massage, exercise in proper quantity

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|-

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|Speech ||Observing moral code of conduct, restraining from improper verbal communication

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|-

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|Rectum and anal canal||Non suppression of defecation urge, therapeutic enema (basti)

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|Sex organs ||Non suppression of urge of micturition, ejaculation, therapeutic enema (basti), therapeutic enema through urinary canal and vagina (uttara basti)

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Diet and beverages:

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===Diet and beverages===

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Among dietary factors, the sweet taste (madhura rasa) is mentioned as the one which is pleasing and nourishing to all the sensory faculties. [Cha. Sa. [[Sutra Sthana]] 26/43], [Su. Sa. Sutra Sthana 42/10] Researches have shown ~~the evidences~~ that sweet taste receptors are ubiquitous throughout the body, including in the gastrointestinal tract as well as the hypothalamus.

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Among dietary factors, the sweet taste (madhura rasa) is mentioned as the one which is pleasing and nourishing to all the sensory faculties. [Cha. Sa. [[Sutra Sthana]] 26/43], [Su. Sa. Sutra Sthana 42/10] Researches have shown pieces of evidence that sweet taste receptors are ubiquitous throughout the body, including in the gastrointestinal tract as well as the hypothalamus.<ref>Lee AA, Owyang C. Sugars, Sweet Taste Receptors, and Brain Responses. Nutrients. 2017;9(7):653. Published 2017 Jun 24. doi:10.3390/nu9070653</ref>

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~~The fermented preparations especially those prepared from sugarcane has the property to enhance the efficiency of sensory faculties~~. ~~[Su. Sa. Sutra Sthana 42/10]~~, [Su. Sa. Sutra Sthana 45/ 183] Various studies have established that self-generated alcohol directly activates gustatory receptor and central neural substrates for sweet taste. Researchers have found the efficacy of ethanol to directly and ~~immediately stimulate complex chemosensory circuits linked to motivationally-relevant limbic and cortical areas~~. ~~Evidence suggests that meat and seafood consumption could potentially protect against hearing loss~~.

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~~Physical exercise:~~

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~~Walking for a comfortable distance in a particular manner~~(~~chamkramana~~)~~is also good for all sensory faculties~~. ~~[Su~~. Sa. ~~Chikitsa Sthana 24~~/80]. Recent researches also describe the functional roles of sense organs in the control of locomotion. A cross-sectional study (n = 22,804) revealed that high physical activity levels are associated with fewer visual impairments. High physical activity levels are also associated with better sensitivity to tastes.

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The fermented preparations especially those prepared from sugarcane have the property to enhance the efficiency of sensory faculties. [Su. Sa. Sutra Sthana 42/10], [Su. Sa. Sutra Sthana 45/ 183] Various studies have established that self-generated alcohol directly activates the gustatory receptors and central neural substrates for sweet taste. Researchers have found the efficacy of ethanol to directly and immediately stimulate complex chemosensory circuits linked to motivationally relevant limbic and cortical areas.<ref>Brasser SM, Castro N, Feretic B. Alcohol sensory processing and its relevance for ingestion. Physiol Behav. 2015;148:65-70. doi:10.1016/j.physbeh.2014.09.004</ref>Evidence suggests that meat and seafood consumption could potentially protect against hearing loss.<ref>Peneau S, Jeandel C, Dejardin P, Andreeva VA, Hercberg S, Galan P, Kesse-Guyot E; SU.VI.MAX 2 Research Group . Intake of specific nutrients and foods and hearing level measured 13 years later. Br J Nutr. 2013;109(11):2079–88.</ref>

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===Physical exercise===

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Walking for a comfortable distance in a particular manner(chamkramana)is also good for all sensory faculties.[Su. Sa. Chikitsa Sthana 24/80].

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Recent researches also describe the functional roles of sense organs in the control of locomotion.<ref>Delcomyn F, Nelson ME, Cocatre-Zilgien JH. Sense Organs of Insect Legs and the Selection of Sensors for Agile Walking Robots. The International Journal of Robotics Research. 1996;15(2):113-127.</ref> A cross-sectional study (n = 22,804) revealed that high physical activity levels are associated with fewer visual impairments.<ref>Vancampfort D, Koyanagi A, Ward PB, Rosenbaum S, Schuch FB, Mugisha J, Richards J, Firth J, Stubbs B. Chronic physical conditions, multimorbidity and physical activity across 46 low- and middle-income countries. Int J Behav Nutr Phys Act. 2017;14(1):6.</ref> High physical activity levels are also associated with better sensitivity to tastes.<ref>Fuchida S, Yamamoto T, Takiguchi T, Kandaudahewa G, Yuyama N, Hirata Y. Association between underweight and taste sensitivity in middle- to old-aged nursing home residents in Sri Lanka: a cross-sectional study. J Oral Rehabil. 2013;40(11):854–63</ref>

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</div>

== More information ==

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#[[Indriyopakramaniya Adhyaya]]

#[[Indriya Sthana]]

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==References==

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==~~References~~==

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