PSYC 2240 Lecture Notes - Lecture 2: Acetylcholine, Barbiturate, Gaba Receptor

• School: York University
• Department: Psychology
• Course: PSYC 2240
• Professor: J De Souza

Document Summary

Input zone: (dendrites, cell body, nucleus) Integration zone (axon hillock) conduction zone: (axon) Output zone: (axon terminals, efferent signals. Signals from the brain towards effectors (e. g. , hand or eye) in other words away from the. Signals from effectors towards the cns (e. g. , sensory feedback from skin) Neural circuits: many neurons combine to make circuits, neural chain knee jerk reflex, sensory signals tell leg it is flexing, leg extends to counter. Diffusion gradient: movement of molecules from a region of high concentration to regions of low concentration. (e. g. sugar dissolving in water) Electrostatic gradient: molecules can carry charge (ions) cations (+ charge) Action potentials: every neuron has a resting charge or resting potential 70mv, maintained by sodium-potassium pump continually pumping na+ out and. Action potential": this is all generated at the axon hillock. Saltatory conduction: conduction of action potentials by myelinated axons.