Psychology 1000 Lecture Notes - Lecture 6: Thermoregulation, Acetylcholine, Reuptake

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

Afferent outside to inside: motor neurons. If it doesn"t reach threshold it goes back to the resting potential: repolarization = k+ outflow, eventually going below the resting potential (hyperpolarization) but making its way back up to -70mv. Absolute refractory period is the time it takes to repolarize, during this time, the neuron is incapable of firing again. Relative refractory period is from hyperpolarization to resting potential. This continues down the neuron and so a signal is transferred down the axon. This causes sodium to come in that area. When sodium comes in, the area next to it is where potassium comes out. Action potentials only occur in axons only they can produce it. In the dendrites and cell body, graded potential occurs. It is different than the action potential b/c it can be different mv"s (action is -70mv to +40mv while graded potential can accumulate information from stimuli by fathering both positive and negative charges.