'Perception is a process of feeling'. In Buddhism, any type of feeling is stated as a mental formation of psychological and physiological makeup.
'Interpretation is a process of thinking'. Thinking is psychological and neurological makeup. As per Mark Tradewell, an educator from New Zealand at the I-learnt website indicates the Glia gland of the brain chemically interacts with the neurons(brain cells) and hormones in the production of thought and the brain transmits them through the neuron pathways to our senses.
My definition of feeling is an inclination of an instinctive urge towards hearts in the form of motive is a sensitive feeling of an individual.
As per my opinion, feeling stimulates the potentials of the heart to transforms into energy, nurtures, and nourishes feelings for insightful understanding in the form of thought, and evoke neural activity to change the perception of the brain.
The heart and brain both the visible organs are intimately interconnected, interdependent, and interacted with each other in association and the mediation of mind.
Buddha said the mind is a subjective experience of an individual for something and as such, in my opinion, the mind is an experiential sensation that is impulsive by nature carries invisible ripples, waves, and surges of experiences and functions as a biological carrier between heart and brain through the neuron pathway and its sense perception is a projection of experience of the heart through the mind to the brain.
Whenever we experience a blend of emotional feelings, first comes to the heart and begins to beat and reacts to transmit to the brain, through the neuron pathway with the help of "impulsive mind". Heart, mind, and brain act in coherent and orderly alignment with each other for reactions.
As per medical science research, the heart communicates to the brain in four major ways:
1) Neurologically (through the transmission of nerve stimulant ),
2) Biochemically (via hormones and neurotransmitters),
3) Biophysically (through pressure waves), and
4) Energetically (through an electromagnetic field of interaction).
As per my opinion, an "invisible mind" is an impulse to be consist of the above neurological, biological, biophysical, and energetical components, works to communicate between the heart to the brain and the brain to the heart respectively subject to neuro-physiological reaction released by an external or internal boost, waves, and energy.
The mind is an invisible carrier manifest thought, attitude, belief, action, desire, aspiration, joy, love, opinions, imaginations, frustrations, fear, anxiety, greed, anger, jealousy, and hate, etc. travels, transmits, and triggers in the form of impulses with the influence of a particular experience to convey a sense organs from the heart to the brain for perception through the neuron pathway to interpret and acknowledge a response and reaction thereafter.
My opinion on the role of the in-between the two visible organs i.e. the heart and the brain, Buddhist philosophy of feelings, and new research on interactions of the heart and the brain gave in sensory perception by James Kingsland on May 10, 2020, clearly explains the role and relation between the heart, mind and the brain.
The above speculation is an abstract logic to explain my conceptualistic rational thinking, my process of thinking is subject to an experience of feeling with the concept of contextual consideration.
Prof. Hemant Nagdive