- published: 14 Jun 2016
- views: 139977
POS, Pos or PoS may refer to:
The lateralization of brain function refers to how some neural functions, or cognitive processes tend to be more dominant in one hemisphere than the other. The medial longitudinal fissure separates the human brain into two distinct cerebral hemispheres, connected by the corpus callosum. Although the macrostructure of the two hemispheres appear to be almost identical, different composition of neuronal networks allow for specialized function that is different in each hemisphere.
The extent of any modularity, or specialization of brain function by area, remains under investigation.With two brain hemispheres, this allows for both specialization and redundancy of functions, which naturally allows some protection from damage. The hemispheres exhibit strong, but not complete, bilateral symmetry in both structure and function. With either side of the brain having a right and left hemispheric side of each cerebral lobe. However, despite the brain’s ability to compensate for some amount of damage through neural plasticity and bilateral symmetry some damage in specific areas of the brain can cause deficits in normal brain functioning, including certain language deficits. These include general aphasias, aphasias being a loss of language ability due to brain damage, and more specifically the aphasias associated with brain damage or lesions specific to Broca’s and Wernicke’s area.