Biology 2485B Lecture 7: Lecture-9-Neurophysiology-1-Notes
17 Dec 2015
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Lecture 9 neurophysiology 1: simple central nervous systems. An organized constellation of cells (neurons and support cells) specialized for the repeated conduction of electrical signals within and between cells . Consists of relatively large structures such as the brain and spinal cord in which large numbers of neurons and support cells are anatomically juxtaposed and interact to achieve integrative functions . Have groups of cells acting as logic gates, can make decisions, sets up their memory. The cns is more than the sum of its parts information integration and decision-making. Information coming in from the eyes, can lead to responses in various different organ systems one input cant lead to different outputs not just 1:1. Comparative physiology has made more simple systems we can study in terms of the cns. Sea anemone: cnidarians have radial symmetry and diffuse nervous systems based on nerve nets simple nervous system symmetry. Sea star: echinoderm nervous systems are simple, perhaps because of their radial.
