Normal brain tissue is represented by four different regions:
Cerebellum, Cerebral cortex, Hippocampus and Lateral ventricle
wall. The nervous system represents the major communication
network and consists of the central nervous system (CNS) and
peripheral nervous system (PNS). The intracranial cerebrum and
cerebellum together with the spinal cord constitutes the CNS.
The brain is covered by layers of membranes, the meninges, and
submerged in cerebrospinal fluid, which also fills the
intracerebral ventricles. The brain can grossly be divided into
different neuroanatomical functional regions such as the
frontal, parietal, temporal, occipital lobes and central gray
matter structures. Anatomically and histologically the brain can
further be stratified into the cerebral cortex representing the
outermost gray matter overlying white matter and the innermost
deep gray matter components. The hippocampus, containing the
neuron rich dentate fascia, is closely associated with the
cerebral cortex, and is located in the m