Manas (the mind) is defined in Ayurveda as the bridge between the external world and the internal Self. It is the tactical controller of the five senses (*Indriyas*) and the five motor organs (*Karmendriyas*).
In modern systems neuroscience, Manas correlates with the Central Executive Network (DLPFC), the Amygdala-Prefrontal pathway, and the Thalamus (the sensory gateway). Within the Ayurvedic framework, Manas is atomic (Anutva) and singular (Ekatva), meaning it can only process one stimulus at a time, moving between inputs with incredible velocity to create the illusion of multitasking.
The 3 Functions of Manas
Clinical Manas operates through a continuous feedback loop of three primary vectors:
Indriyabhigraha
The act of anchoring the mind to a specific sense. If Manas is elsewhere, the eyes see but the mind does not perceive.
Svasya-nigraha
The inhibitory function of the mind—the ability to stop an impulse and regulate emotional outbursts.
Uha & Vichara
The deliberative process of analyzing data and projecting outcomes before the intellect (Buddhi) takes a decision.
Classical Foundation
"लक्षणं मनसो ज्ञानस्याभावो भाव एव च ।"
"lakṣaṇaṃ manaso jñānasyābhāvo bhāva eva ca |"
"The characteristic of the mind is the presence or absence of knowledge, depending on its connection with the external sense."
— Charaka Samhita, Sutrasthana 8.7Pathological States of Manas
Manovaha Srotas
The 'Channels of Mind'. Clogging these channels with Ama (mental toxins) leads to brain fog, confusion, and chronic indecision.
Atipravritti
Hyper-activity of the mind. Symptomatically: racing thoughts, over-analysis, and insomnia due to a 'hot' Manas.