Psychology 1000 Lecture Notes - Lecture 6: Resting Potential, Hebbian Theory, Extracellular Fluid

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Terry Biggs

Document Summary

October 23rd quizzes chapter 1 to 4 are due. Coffee caffeine molecule resembles adenosine (attaches to where adenosine would attach adenosine is responsible for making one drowsy caffeine prevents drowsiness), adrenaline increase (dilates bronchi) Most neurons in the body are multipolar, bipolar in sensory, unipolar in reflexive. Experimental bias: not personal outcome changes because people expect experiment. Classify neurons by function: sensory neurons: afferent, motor neurons: efferent, inter neurons: relay stations. Outside: na+, k+, cl- inside is relatively positive. Inside: na+, k+, cl-, a- (protein molecule) inside is relatively negative. Threshold: around -55mv, all holes go crazy and open. Incapable of generating another action potential at this time. Relative refractory period: under -70mv (resting potential) Another action potential can occur but stimulus has to be even stronger. Action potential gets sent down the axon. Graded potential only occurs in dendrites and the cell body to axon hillox.