CSB332H1 Lecture Notes - Lecture 9: Ligand-Gated Ion Channel, Neurotransmitter Receptor, Axon Hillock
14 Mar 2014
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Document Summary
Electrical impulses flow from first order sensory (afferent) neurons in the pns to second order sensory neurons located within the spinal cord. The signal is eventually relayed to the thalamus, which is the major sensory relay station of the nervous system. From there, information is delivered to different areas in the brain for further cortical and cognitive processing. One of the functions of cognitive processing is to be able to compare novel information with information already stored in different areas of the cerebral cortex. Cognitive processing allows the organism to activate the appropriate behavioural program in response to the stimulus encountered. The behavioural output is encoded in outgoing electrical impulses that propagate along motor neurons and motor fibres forming the cortical spinal tract. The flow of information from one neuron to another is called synaptic transmission. Electrical signals are communicated or transmitted from one region of the pns until the signals get to the.
