1 ISSN : 2693 6356 2018 | Vol 1 | Issue 6 Smriti (Memory) and Related Concepts in Ayurveda: A Critical Analysis S.Swathi1 , K .Anitha2 , S .Sharadha3 University College of Medical Sciences, of Delhi, Delhi ABSTRACT The higher mental process of encoding, storing, and retrieving information is called memory. When it comes to understanding new information, it plays a crucial part. There are a few scattered allusions to the idea of Smriti (Memory) in Ayurveda's ancient writings. Smriti is more closely associated with Buddhi and Mana than with physical matter. The purpose of this review is to examine the notion of Smriti in light of the Ayurvedic classics. Substances and Techniques:We utilized data collected from Ayurvedic texts and reviews found in NIIMH, PubMed, and Google Scholar to finish the research. Smriti, smRuti, were the keywords employed in the search strategy. The Samhita has a total of ninety allusions, all in different situations. The information gathered was organized into the following categories: definition, philosophy, physiology, evaluation, pathology, and therapy. In conclusion, Smriti is multifaceted, touching on not just the mind but also the body and spirit. Atma (soul), Mana (psyche), Buddhi (intellect), and Medha (retentive faculty of memory) are thought to work together to create memory. Despite the fact that different Acharya have given their own explanations of Dhi (Understanding), Dhriti (Tenacity), and Smriti (Knowledge), all three are necessary for Buddhi to work. Keywords: Ayurveda, Smriti (Memory), Buddhi, Medha, and Buddhi Introduction Humans have been trying to figure out what memory is, how it works, and why it fails since the beginning of time. It's essential to being human, but it's also one of the hardest things to pin down in a person. According to current scientific understanding, memory is a specific area of the brain where data may be encoded, preserved, and later recalled. Memory is also, at its most fundamental level, a network of imprinted brain connections, from a physiological or neurological perspective. Reminiscence is the process of recalling and reliving a former event via the activation of the same neural circuits that were present during the original experience. One's ability to learn and create linguistic links and a sense of self depend on one's ability to recall prior occurrences. Bhagvadgeeta, an ancient text, alludes to Smriti and encapsulates the text's significance. Imagining sensual items causes one to get attached to them; this leads to desire; and lust leads to rage. Anger may cause total delusion, and confusion in one's memories can result from being deluded. If you have trouble remembering things, you won't be as smart, and when you're not smart, you'll go back to wanting more and more stuff.[1] The Ayurvedic concepts of Atma, Mana, Medha, and Buddhi are more closely associated with the notion of Smriti. Mana is crucial in learning and memory retention, and it also controls the external environment. environment with the brain through the different Gyanendriyas (sense organs). Buddhi is a powerful entity which retains the specific knowledge or the outcome of texts gained by reading, listening or repeating it. Retention of cognition takes place under the area of Medha. Smriti helps the mind to recollect the reference of any objects on the basis of concept made in past experiences. Materials & Methods An extensive search pertaining Smriti was carried out upon the classical literature of Charaka Samhita, Sushruta Samhita, Ashtanga Hridya and Sangraha. Research and review articles found in NIIMH, PubMed, and Google scholar were also 2 utilized. The keyword used in search strategy was Smriti, smRuti. The citation lists from the included references were subsequently examined and a hand search was also performed in an attempt to identify additional points. Observations Total Ninety references at various contexts were found in Samhitas and are explained underneath. The retrieved data from the above sources have been stratified as definition, philosophical, physiological, assessment, pathological and treatment aspect of Smriti. Physiological aspect was further subdivided into Utpatti Karana (Causative factor), Utpatti (Production), Doshas (humour) involved, Smriti in different Prakriti (physical constitution), Sara and Vaya Avastha (age). Another classification of Smriti as Guna (Quality), Hetu (Cause), Lakshana of Rogas (symptom of diseases) and Chikitsa (Treatment), Arishta Lakshanas (signs of imminent death) was also found. Definition of Smriti: 1. Vayupuran: The seers who constantly think about the spiritual object have written compendium which are called as Smriti.[2] 2. Vaisheshika philosophy: Smriti is said to be the results from a particular conjugation between self, mind and latent impressions.[3] 3. Acharya Vyasa explains memory as the retainable subject with the knowledge and the experience of this as the initiation of impression. The experience of the subjects leads to arousal of memory.[4] 4. Yogavasishtha describes reminding some of the special features of an objects which has been previously experienced or perceived is called as Smriti.[5] 5. Sabdhakalpadruma mentions, thinking about already experienced object, person etc. is Smriti which leads to vibrations, state or trance, tears, sigh etc.[6] 6. Acharya Charaka quotes remembrance of a thing through hearing, direct perception or earlier experienced with concentrated mind is called as Smriti.[7] 7. Chakrapani comments Smriti as the ability to recollect the past knowledge. [8] 8. Acharya Sushruta decodes remembrance of previous experience of object as Smriti.[9] 9. In Tarkasangraha, remembrance by previous experience is said to be Smriti.[10] Philosophical aspect of Smriti: While describing the list of Atmaj Bhavas (Factors derived from Soul), Acharya has clearly mentioned Dharana (Retention power), Dhriti, Buddhi and Smriti. [11] Smriti is one among the Lakshana (feature) of Parmatma’s (Absolute Soul) existence[12] which is also one of the factor which was said as a proof for the existence of Atma.[13] Acharya Charaka has opined that remembering of Tatwagynana (Philosophy) is known as Smriti[14] and a person having Smriti will not only be free from Roga (Disease) but will also attain Moksha (Salvation).[15] Smriti is one of the reason for both Pravritti[16] (Attachments) and Nivrutti[17] (Detachments) which is nothing but Dukha (Misery) and Sukha (happiness) respectively.[18] Physiology of Smriti Smriti Utpatti Karana (Causative factors for the memory): Two factors are said to be responsible for the function of Smriti. 1. Abhyantara Karana (Intrinsic factor): The Sannikarsha of Atma, Manas, Indriya (Sense organs) and Indriyarthas (Object of Sense) are responsible for Smriti.[19] 2. Bahya Karana (Extrinsic factor): Acharya Charaka has explained 8 factors [20], the repeated practice of these will improve Smriti. They are as follows, i. Nimitta Grahana (Reaction to caused effects), ii. Rupa Grahana (Perception similar shape objects), iii. Sadrushya (Similarity), iv. Saviparyaya (Contrast), v. Satvanubandha (Attention), vi. Abhyasa (Repetition), vii. Gyanayoga (Divine knowledge), viii. Punah Shruta (Repeated hearing). Smriti Utpatti (Memory Process) In Ayurveda the process of Smriti is not mentioned directly. But it has been mentioned in scattered manner in various texts. According to Chakrapani, Pragya (Wisdom) can be acquired by means of three entities i.e. Dhi, Dhriti and 3 Smriti.[21] Process of Smriti initiates with the perception of the object or subject by Indriya. Indriya carries perceived object or subject to Manas. It passes through the Mana Vishaya (Functions of mind) Viz: Chintana (Thinking), Vicharya (Analysing), Uhya (Reasoning) and get certain form i.e. Buddhi. Then it is sent to Atma. After the knowledge is known by Atma, action will be performed if necessary otherwise it is stored as Medha (Retentive Faculty). In future any similar stimuli strikes, the recollection occurs i.e. called Smriti. [22] In contemporary science,[23] the three main processes involved in memory production are encoding, storage and recall (retrieval). Doshas involved in Smriti Utpatti: Different Doshas are involved in Smriti utpatti, either they act on Smriti directly or helps for it by acting on Mana, Indriya, Buddhi. Which are listed in Table no 1. Table no. 1: Doshas involved in Smriti Utpatti Smriti in different Deha prakriti (Body constitution): Status of Smriti varies according to different body constituents. It is listed in table no. 2. Table no. 2: Smriti in different Deha Prakriti Smriti and Sara (Excellence of tissue): Among the eight Sara description, Twaka Sara Purusha[41] (excellence of Skin) is said to have high intellect and Satva Sara Purusha[42] (Excellence of mental faculties) is endowed with good memory. Smriti and Vaya (Age) In Balyavastha (Childhood), there will be Aparipakva Avastha (Immature stage) of Dhatu, Indriya, Bala (Strength) with the predominance of Kapha Dosha. In Madhyavasha (Middle age) Bala, Virya (Energy), Paurusha (Manliness), Parakrama (Valour), Grahana (Grasping power)-Dharana (Retention power)- Smarana Shakti (recollection power) will be in Pakva Avastha (Mature stage) with the predominance of Pitta Dosha. In Jara Avastha (Old age) there is a gradual depleting nature of Dhatu, Indriya and Bala with the predominance of Vata Dosha. It results in diminished Grahana, Dharana and Smaran, called as Smritirhasa (Diminished memory).[43-44] Assessment of Smriti: Entities related to memory are to be known with Anumana (Inference).[45] Smriti can be measured by means of ability to recollect the previous experience and Medha on the basis of ability to retain various scriptures Pathological aspect of Smriti: Smriti Bhramsha (Perverted Memory): when the mind of an individual has been roofed by the Rajas and Moha (Confusion) its activities are being taken to such an extent that one cannot be able to recollect the memory stored as it is related to Tatvagyana (Real Knowledge). This condition is called as Smriti Bhramsha (destruction of memory). [46] 1. Nidana (Cause): a. Diwaswapna[47] (Day sleep) b. Gramya Aahar Sevana[48] (Urban dietary) c. Madyapaan by Garbhini[49] (Alcohol intake by pregnant woman) 2. Samprapti (Pathology): In classics specific pathophysiology of Smriti is not mentioned but scattered references from various texts concluded the pathogenesis. Mana when getting hindered by Vata Pradhan Tridosha Prakopa, leads to Rajo and Sr. No. Dosha Action 1 Prana Vata[24] Control and stimulation of Mana to analyse the entire perception and action projected to Karmendriyas (organ of action). 2 Udana Vata[25] Responsible for Smriti 3 Vyana Vata[26-27] Stability and concentration of Mana. 4 Sadhaka Pitta[28] Responsible for mental faculties like Buddhi, Medha. 5 Tarpaka Kapha[29] Nourishes the Indriyas and helps in perception. S r . No. Prakriti Smriti 1 Vata Prakriti Alpa Smruta (low memory),[30] Chala Smriti (unstable memory), [31] Shighra Vismarana (quick forgetting)[32] 2 Pitta Prakriti Medhavi (intelligent)[33],[34] 3 Kapha Prakriti Chiragrahi (slow grasping) [35] and Smrutimana (good memory) [36] 4 Satvika Prakriti Smrutimana[37] 5 Yamya Kaya Smrutimana[38],[39] 6 Brahma Kaya Smrutimanta[40] 4 Tamo Guna Vridhhi (increase in arrogance and ignorance) and causing Avarana of Manovaha Srotas (occlusion in channels of psychic activities) therby finally leading to Dhi, Dhriti and Smriti Vibhramsha. Management of Smriti Practicing of Yoga endows a person with Ashtasiddhi including Smriti. Abhyas (Constant practice), Tadvidya Sambhasha (Discussion with experts),[50] Acharya Sahavas (Company of Teacher) is best to promote intelligence and memory.[51] Nidra (Sleep) is essential because knowledge is dependent upon it.[52] There are lot of dietary and medicinal prescriptions in Samhitas especially for the elevation of Smriti, Medha, Dhi and Buddhi. Satvika Aahara (Healthy diet) leads to attainment of excellent memory.[53] Regular intake of Ghrita (Ghee) is recommended for strengthening the senses and also in deprivation performance of Medha and Smriti due to vitiated Vata and Pitta.[54-56]Smriti, has been mentioned as an advantage of consuming Eranda Sneha (Castor oil),[57] Haritaki (Terminalia chebula)[58] and Kurma Mamsa (Meat of tortoise).[59] Rasayana drugs act through their intrinsic attributes in terms of Rasa (Taste), Guna (Qualities), Virya (Potency of the herb), Vipaka (Taste conversion after digestion) and Prabhava (Special effect of herb) with reference to their effects on Saptadhatu. Some herbs directly act on higher mental function; like intellectual power, memory, speech, learning and some increase power of sensory organs. Intake of Medhya Rasayans Dravyas like Mandukaparni (Centella asitica Linn.), Yashtimadhu (Glycirrhiza glabra Linn.), Guduchi (Tinospora cardifolia Miers) and Shankhapushpi (Convolvulus pleuricaulis Chois) [60] and Rasayana preparations like Bramharasayana[61], Chyavanaprasha[62], Endrarasayana[63], Triphala Rasayana[64], Shilajitu Rasayana[65], Indrokta Rasayana[66] are used for amendment of memory. After Shodhana Karma (Purification therapy), Shweta Bakuchi Churna (Powder of Psoralea corylifolia) with Guda (Jaggery) and Ghrita (clarified butter) for 6 months along with Pathya leads to Smritiyukta, Nirogi Shatayu Jeevan (100 years healthy life with good memory).[67] Sharira Shuddhi (purification of body) followed by 12 days intake of Shweta Vacha (white Achoras calamus) and Amalaki with Dugdha (Milk) on empty stomach along with Pathya as Ghrita, Dugdha and Shali (Rice) increases Smriti.[68] As Guna (Quality): Smriti is attribute of Hitayu (useful life).[69] Smriti is counted among the qualities of Parishak Vidvana (Wise examiner)[70], Pranabhisar Chikitsaka (Good physician)[71], Shishya (Student) [72],[73], Duta (Messenger)[74] and Karmapurusha[75] which is also possessed by the Rogi (Patient)[76], Uttama Vaidya (Physician)[77] and serve as an aid to be get successful treatment. It is one of the attribute of Satvika Manas (Sound mind).[78] As Hetu (Causative factor): One among the three principle and fundamental causative agents in the disease manifestation is Prajnaparadha (intellectual blasphemy). The loss of Dhi, Dhriti and Smriti hints to indecorous physical, vocal and mental exploit which is called Pragyaparadha (wilful mistake). [79] As Lakshana (Symptom): Smriti is implicated explicitly in two major psychological disorders like Unmada (Psychosis) and Apasmara (Epilepsy). In Unmada[80], Smritibhramsha will be there while in Apsmara[81] there is Smritinasha (loss of memory). It also get laden in Atatvabhinivesha (Psychic perversion), as Pragyaparadha is main Nidana (cause) of it.[82] In Mada Avastha (Alcoholism), Acharya Charaka utters that Smriti will be normal in first stage which gets vulnerable in next stage.[83] It also gets affected in Vyana Vata occluded by Prana Vata[84] and later stage of Kaphaja Visarpa (variety of herpes).[85] As Chikitsa (Treatment): Smriti is considered as key therapeutic approach in Manasika Vyadhis (Mental disorders), known as Satvavajaya Chikitsa (Psychotherapy).[86] It is also implicated in the hindrance of exogenous diseases.[87] As Arishta (Symptom of imminent death): Smriti is one midst factor to be evaluated for the assessment of upshots of disease process.[88] Loss of memory without any attributable reason may be the indicator of death within 6 months[89] or imminent death.[90] Discussion There are similarities, dissimilarities and specificity on concept of Smriti in various classics. Even though Smriti is directly related to memory power, there are other dynamics that aid in remembering things like Buddhi, Medha and Dhriti. In the course of knowledge these are interrelated with each other. Mana is the entity that associates with Atma for the proper cognition. Budhhi decides and bifurcates it as the 5 Hita (Good) and Ahita (Bad). Dhi is the capacity or power of retention. Dhriti is the power that controls the orientation of attitude. While Smriti helps the mind in recollecting the entire percept or experienced objects on the basis of concept formed by past experiences. If anyone of these are hampered the ultimate objective of attaining knowledge cannot be achieved. Whenever Charaka enlightens some herbs or the Rasayana or the medicines, he quoted the terminologies like Dhritivardhana, Medhakara, Smritikara etc. separately. It shows that he has accepted the separate functional existence in Dhi, Dhriti and Smriti and their intricate interrelation. Chakrapani and Gangadhar understood performance of Buddhi as the result of the collective performance of Dhi, Dhriti and Smriti. They mentioned it as Trividh (Three) Buddhi.[91] Hemadri’s directives of differential assessment of Dharana and Smriti are very peculiar, useful and applied in practice. He said that interrupted and uninterrupted presentation of perceived knowledge represents Smriti and Dharana respectively. Sushruta agrees with Charaka that re- experiencing the past experienced knowledge is Smriti. He mentioned that Smriti and Anubhava i.e. memory and experience are the two types of Buddhi. He has considered the Smriti as a separate entity but considered it as type of Buddhi; on the contrary Charaka has included Smriti as integral part of Buddhi performance. He has insisted Dhi, Dhriti, and Smriti as the inseparable parts of the Buddhi performance. Different Acharya clarified the different aspects, as the meaning of the term it has been elaborated, Smriti does not stand only for recollection but for the very much important factor to whole process involving in the formation of the faculty of memory. Smriti is well understood through the various concepts. Philosophical concept are useful for knowledge and salvation. Physiological and pathological aspects are helpful for better understanding of Smriti as these are interlinked. Thus numerous attributes of Smriti gives importance of it. Conclusion Smriti is sort of streams of previous experience which helps to recollect the facts related to present experience or object. It is a result of collective action of Atma, Mana, Buddhi and Medha. So disturbance or nourishment of any of its attribute can affect the memory power. Though various Acharya have explained Dhi, Dhriti, and Smriti separately but these are the inseparable parts of the Buddhi performance. The factors like Dosha, Prakriti, Vaya, Sara etc. influence the memory. In many disease memory gets affected and it is also one of the key factor in Psychotherapy. In Ayurveda, Adravyabhuta (Non- drug) and Dravyabhuta (Medicine) Chikitsa are mentioned for excellence of memory. Hence understanding this concept will help in proper clinical practice. References 1. Bhagvadgeeta, 2nd Chapter, 62-63 verse, 34th ed. Gorakhpur: Gitapress, p. 40 2. G. V Tagare, Vayupurana, Part 1, Boundary and limits of Mount Devakunja, 40/23, Delhi: Motalal Banarasidas; 1987,p. 270 3. Mahadev Gangaram Bakre. Vaisheshika Darshana, 9/12, Bombay: The Gujarat printing press; 1969 4. Patanjali, Patanjali Yoga Pradipika, edited by Prabhavananda, commentary by Omnath Tirth, chapter 1, verse 11, 24 ed. 2004, p. 21 5. Yoga Vaisistha, Chapter 4, Dissolution of Mind, An English translation from the Sanskrit Original, Tiruvannamalai: Sri Ramanasramam; 1999, p. 42 6. 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Ibidem, Charaka Samhita ( 7 ) , part 1 , Rogabhishagjitiya adhyaya, Vimanasthana 8/110, p. 691 30. Ibidem, Charaka Samhita ( 7 ) , part 1 , Rogabhishagjitiya adhyaya, Vimanasthana 8/122, p. 696 31. Ibidem, Ashtanga Samgraha (32), Prakriti bhediya shareera adhyaya, Sharirasthana 8/20- 22, p. 103, 104 32. I b i d e m , C h a r a k a S a m h i t a ( 7 ) , p a r t 1 , Trividhrogavisheshavigyaniya vimana adhyaya, Vimanasthana 4/8, p. 625 33. I b i d e m , C h a r a k a S a m h i t a ( 7 ) , p a r t 1 , Katidhapurashiya shareera adhyaya, Sharirasthana 1/101, p. 736 34. Ibidem, Charaka Samhita (7), part 1, Ashtauninditiya adhyaya, Sutrasthana 21/48, p. 316 35. Ibidem, Charaka Samhita (7), part 2, Pranakamiya rasayanapada adhyaya, Chikitsasthana 1/ 2/3, p. 16 36. Ibidem, Charaka Samhita (7), part 1, Jatisutriya sharira adhyaya, Sharirasthana 8/21, p. 861 37. I b i d e m , C h a r a k a S a m h i t a ( 7 ) , p a r t 1 , Katidhapurashiya shareera adhyaya, Sharirasthana 1/141, p.744 38. Navegandharaniya adhyaya, Sutrasthana 7/58,