PSYC 355 Lecture Notes - Lecture 11: Posttraumatic Stress Disorder, Hair Cell, Motor Neuron
19 Sep 2018
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Set of dendritic trees: one is stress free and the other is after restraint stress. The pre synaptic potential is an action potential: its up, its big in magnitude in terms of millivolts. You go big to small (?) but the big generates a neurotransmitter that then generates something. John eccles won the nobel prize with hodgkin and huxley because he elucidated the biophysics of electrical impulses in neurons of the cns. He did this by recording real neurons: He had stimulating electrodes that would activate dendrites (in a tiny neuron) Hes generating synaptic potentials at the dendrites. And hes recording action potentials from the axon hillock. Eccles graph shows the threshold for generating an action potential, the amplitude of the synaptic potential, and the membrane resting potential. If your at threshold you will generate the synaptic potential, If your at threshold close enough to the stimulus you will generate an action potential.
