PSYC 100 Study Guide - Midterm Guide: Peripheral Nervous System, Basal Ganglia, Central Nervous System

• School: McGill University
• Department: Psychology
• Course: PSYC 100
• Professor: Oliver Hardt

Document Summary

Sodium channels open (before action potential starts) Saltatory conduction = myelinated axon - decrease the amount of resistance - sodium can easily escape - more conductress down the axon. Node of ranvier - voltage gated sodium channels: electrical to chemical to electrical. Electrical message- at synapse transferred to a chemical message ( we have to have neurotransmitter release - for this we need calcium release ) - electrical message. Inhibitory ( re less) (gaba, dopamine) x ectitatory ( re more) (glutamate, acetlycholine, Long - term potentiation ( not all synaptic plasticity does not turn into ltp) Insurtion of ampar receptors - very important to maintain ltp. Maintaining: pkm zeta - constantly active by blocking pkmzeta you can erase memory. Divergence: one cell synapses diverges into many cells. Pinna - auditory canal - tympanic membrane = eardrum - hammer, anvil and stirrup - oval window. Hippocampus - heavily involved in episodic and explicit memory.