Psychology 1000 Lecture 6: Brain Nervous System Neurophysiology II

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Laura Fazakas- De Hoog

Document Summary

Psychol 1000 - lecture 6 - brain/nervous system/neurophysiology ii. The portion of the nervous system that prepares the body for immediate action (i. e. fight or flight) is the: The portion of the neuron that receives information from other neurons is the the. Stimulation causes cell membrane to open briefly. Shift in electrical charge travels along the neuron. Action potential results (threshold at -55mv must be reached) Neurotransmitters: chemical messengers that diffuse across synapse and activate receptor sites on adjacent cells. Cause inflow of sodium or or other positive ions. Like yes votes want neurona to first action potential. Positive ions flow out and negative ions flow in. Cause cells to become even more negative internally; moving it further from firing action potential. Like no votes do not want to fire action potential. Neurons summate/add up all the signals to determine if excitatory out numbers inhibitory. If this is the case it will fire action potential.