CNS comprises of brain and spinal cord. The brain has three parts. The cerebrum is responsible for conscious thought and voluntary motor control.

The cerebellum is for balancing and coordination of motor movement.

The brain stem is consisting of three-part. Midbrain connects with the cerebrum upwards and down with pons, the middle part. The medulla, the bottom most part connects upward with pons and down with the spinal cord. The function of the brain stem – basic autonomic functions like breathing heart rate, and maintenance of blood pressure.

The spinal cord is a cylindrical cord-like structure starting from the brain stem at the upper level and ending at the lumbar region of the lower level. The vertebrae column starting from below the base of the skull encases the spinal cord and makes a hard barrier.

Peripheral Nervous System:

It includes all the nerves that connect the CNS (Brain and spinal cord) to all parts of body tissue including sensory receptors, muscles, and organs. It is of two types: SNS (Somatic Nerve System) and ANS (autonomic nervous system). SNS is responsible for voluntary muscle movement and sends sensory impulses to CNS for interpretation and coordination. ANS is responsible for involuntary actions like heart rate, digestion and breathing. ANS is of two types, the parasympathetic nervous system, and the sympathetic nervous system. The parasympathetic nervous system is responsible for the relaxation and restoration process. The sympathetic nervous system is responsible for flight or fight response.

Definition of Brain:

Definition of brain does not imply accumulation of large no neuroanatomical and neurobiological data. None of the scientific framework has decisively passed the test of experimental investigation on most of functional realms of brain. In this context OLAF SPORNS, the famous professor psychological and brain science of Indiana university quotes “Modules of brain networks define communities of structurally and functionally related areas, but they do not represent or support discrete mental faculties.”

There are many things about   human mind that science does not know. Many occurrences of world phenomena related to humanity cannot be answered by pure science and technology. Technological advances have  created  much  confusion even in minds of guardians of society as happened in the past as well.  Recently the whole of the world is apprehensive of AI, because of unpredictable future AI may pose to humanity. ELON MUSK has put it to be more dangerous than Nuclear Bomb. He has quoted,” I think AI is potentially more dangerous than nukes.” AI is now being used to understand how human think, learn, make decision autonomously. The most remarkable feature of ai of becoming self-supervised learning, learning from experience. It may so happen that it may acquire consciousness and replace the human mind, others are sceptical for different reason.

Brain as viewed in the mirror of science

Human brain is the most complex organ system, composed of nerve tissues, essential for our survival and wellbeing. It is the seat of intelligence, interpreter of all senses, initiator of body movement, controller of emotion and behaviours and judgement. Human brain is source of all qualities that define our humanity. In this regard there is a beautiful quote by V.S Ramachandran, a neuroscientist and author of ‘phantoms in the brain’ – ‘The brain is a mystery machine, constantly trying to make sense of the world’

Advance scientific and technological knowledge’s are applied to explore the structural and functional aspect of NS, brain in particular, to define the modalities of brain activities. Quote by Lisa Randall- “Neuroscience is exciting. Understanding how thoughts work, how connections are made, how the memory works, how we process information, how information is stored – it’s all fascinating.”

In spiritual context minute details of various scientific research results of NS, brain in particular are not mentioned. Elaborate description of today’s research is very vast and mostly based on theoretical principles, philosophy and observations. Glimpse of such research have been discussed in Non spiritual blog. It may be refered in Non Spiritual contents in same site divinejourneyfoundation.org