PSY 110 Lecture Notes - Lecture 4: Coevolution, Selective Serotonin Reuptake Inhibitor, Reuptake

• School: University of Miami
• Department: Psychology
• Course: PSY 110
• Professor: Roderick Gillis

Document Summary

Myelin sheath make signal move faster; prevent bleed off (short-circuiting) of the signal. Axon bud/ button swelling at the axon terminals. Neural impulses move in one direction and are caused by changes in polarity. Gaps between neurons allows signal to stop or else very cell would re off at once because they would all be touching. Neurotransmitters bind to only certain receptor sites to transmit signals from brain to only certain neurons and not others. Lock & key analogy of neurotransmitter and receptor. If chemical released bonds with receiving neuron then cell may re. Neurotransmitter is synthesized, released, and deactivated/ metabolized (chemicals or enzymes break down), so that neuron all not fire inde nitely. 4. metabolism (nt deactivated) reuptake (nt brought back into the neuron) ***prozac used to mainly treat depression; ssri selectively prevents re-uptake of serotonin*** If cell cannot re-uptake serotonin, there is a depletion of serotonin; usually makes it more or less available.