e mërkurë, mars 16, 2005

Neurotransmitters

The nervous system processes sensory information and controls behavior by performing an enormous number of computations. These computations occur both within cells and between cells, but it is intercellular information processing, involving complex neural networks, that provides the nervous system with its remarkable functional capacity. The principal cells involved in information processing are neurons, of which there are hundreds, if not thousands of individual cell types based on morphology, location, connectivity and chemistry [1]. In addition to neurons, the other major kind of cell in the nervous system is the glia, which play critical support roles, but which are increasingly seen to function in some aspects of information processing.