Dictionary portrays that “mind” is a ‘psychic’ experience or a sort of ‘spiritual’ being. During the prehistoric era when human thoughts started penetrating the unknown territories, ancient philosophers explained mind as an entity which belonged to the spirit world. That might be the locale from where dictionary borrowed the stated concept that mind is ‘psychic experience’ of humans.
The philosophy that prevailed in India during the period before CE 1500 when the invasive Aryans arrived, explained mind as consciousness generated by human brain. That is exactly what modern science says. However, with the arrival of the Aryans, all the materialistic thoughts that existed in ancient Bharat were replaced by a philosophy based on subjectivism. Concept of human mind was no exception. Their explanation was that mind belonged to the spirit world which exists outside the human body; mind enters body from the spirit world through an unknown and invisible thread that can be experienced only by the enlightened spiritualists; mind traverses with unimaginable velocity; enlightened spiritual gurus can communicate with anybody and everybody through the medium of mind irrespective of distance and locations.
There thus came the concept of mind as being an entity immersed in the spirit world; there thus came the concept of mind getting connected with the human body.
It took hundreds of years since the birth and growth of the imaginations began before the concept of materialistic ideas attracted the thinkers. In that context, the name of Anaxagoras who was alive around BC 500, needs a reference: According to Anaxagoras the cosmos is made of divisible matter and every bit of the matter can become anything but no part of matter can become ‘mind’ because mind is soul which is separate from matter. It confirms that even Anaxagoras’ ideas were born out of imaginations.
The mind connection with spirit world continued almost up to AC 17th Century till Rene’ Descartes propounded the Cartesian theory of Dualism to resolve mind-body problem.
Descartes proposed a host of theories. One of his theories was that there exists a distinction between the realms of mind and matter. Another proposal was that universe contains a single stuff. Mind and matter are both the aspects of that single stuff.
Almost all the theories about mind are, in some way or the other, related to an invisible spirit that exists outside human body. Though some of the theories conceived the idea to connect mind to matter, the penultimate conclusion could not escape the mind-relation with soul and spirit.
Science does not have space to accommodate any spirit world; mind does not exist in a non-existent spirit world to enter the human body. The phenomenon of Mind is a part of human physic and therefore mind need not require to be connected to human body.
Mind is not a separate entity; separate from the physical body which is material. What is referred to as mind belongs to the physic. The sum total of different reactions of the physic, – reactions to stimuli emanating from both the internal and the external environs, is called ‘Mind’. In terms of science, the concept of mind as an entity of the spirit world getting connected with physical body is deceptive. The human body consists of body cells and nerve cells. Both the body cells and nerve cells form part of the body.
Feelings and emotions are felt as a result of excitation of the nerve cells. Excitation takes place when stimuli from the environs react with the nerve cells. The stimuli from environs reach central nervous system through various nerve connections in the sensory centers that represent vision, hearing, smelling, tasting and touching. These sensory nerve centers are there in the body at the time of birth. The mental activity that enables cardiac pulsations, blood circulation, breathing and ingestion are ingrained in the nervous system at the time of birth and are made possible through permanent nerve connections controlled by unconditioned reflex actions. The mental activity governed by unconditioned reflex action just keeps the organism to meet bare subsistence needs of the body. These bare needs are supplemented by countless nerve connections which are formed after the organism is born. Such after-born nerve connections are activated and controlled by conditioned reflex actions. Human mind represents the combination of both the unconditioned and conditioned reflex actions that take place in the central nervous system.
Organism survives in the environment; the organism grows and fulfills its biological calls through nervous actions which are guided, controlled and executed by unconditioned and conditioned reflex actions. These then are supported and supplemented by inherent biochemical formulations of congenital origin. The entire process taken together is what constitutes ‘Mind’. The concept that mind exists in the spirit world and that the mind gets connected with the human body because of soul that sustains life, is misconceived belief.