To understand how the brain computer interaction occurs, we
have to know the concepts of human brain and its functionalities.
Human brain contains billions of nerve cells arranged in a particular
pattern that coordinate emotion, behaviour, thought, sensation etc. Like the
national highway connects all parts of the country to the capital, here in
human body a very complicated highway system of nerves connects the brain to
the rest of human body.
The cerebrum is the largest part of the human brain, this
what we generally visualize a human brain. The outermost layer of the cerebrum
is called cerebral cortex. Sometimes it also referred as grey Matter of the
brain. The wrinkles and deep folds in the brain increases the surface area of
the grey matter, so more information can be processed.
The cerebrum divided into two halves by a deep fissure. The
sides of the brain communicate with each other through a thick tract of nerves,
called the corpus callosum, at the base of fissure.
It is believed that the one side of body is controlled by
the opposite side of the brain.
The hemisphere of the brain can be further divided into 4
parts.
1
The frontal lobes :Thinking, Planning,
Organizing, Problem Solving, Short term Memory
2
The parietal lobes: Sensor
3
The occipital lobes: Process images from eye and
link to the memory
4
The temporal lobes: process the sensor
information
The cerebellum is situated below the brain at the back, and
it combine the sensor information received from eye ear and muscles to
coordinate the body.
The brainstem links the brain to the spinal cord. It
controls many functions that are very important to life, such as heart rate,
blood pressure and breathing. This area is very important fro sleep.
The core of the brain controls emotion and memories is known
as Limbic system, and these structures come in pairs as each placed in each
hemisphere of te brain.
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The thalamus: acts like the firewall for message
passed between the spinal cord and the cerebral hemisphere
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The hypothalamus: controls emotion
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The hippocampus: memory manager
The nervous system is all the nerves in the body, that are
connect the brain with the body through the spinal cord.
Neurons have two man types of branches coming off their
bodies.
1
Dendrite: receive the incoming signals
2
Axon: carried in the signal from nearby neuron
Inter neuron communication is very fast.
A neuron communicates with each other cells through
electrical impulses, when the nerve cell is stimulated.
Within a neuron, the impulse moves to the tip of an axon and
causes release of neurotransmitter chemicals that acts as messengers.
Neurotransmitters pass through the gap between two nerve
cells, called Synapse and attached to receptors on the receiving cell.
This process repeats from neuron to neuron, s the impulse
travels to destination.
This web based communication that allows the human to move,
think, feel and communicate.
For every job and feelings there is a different web
combination.
Studied from: http://www.mayoclinic.org/brain,
Wikipedia, youtube
