PSYA01H3 Chapter Notes - Chapter 3: Alan Lloyd Hodgkin, Andrew Huxley, Aa Battery
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Together, these stages are what scientists generally refer to as the electrochemical action of neurons. Electric signaling conducting information within a neuron. Recall: cell membrane is porous and allows small electrically charged molecules, called ions, to flow into and out of the cell. The flow of molecules across a cell membrane enhances the transmission of information in the nervous system. The resting potential the origin of the neuron"s electrical properties. Resting potential the difference in electrical charge between the inside and outside of a neuron"s cell membrane: neuron"s natural electric charge o o. Creates the environment for a possible electrical impulse. 1st discovered in 1930s; back then it was measured to be -70 mv (millivolts) [roughly. 1/200 of the charge of an aa battery: arises from the difference in concentrations of ions inside and outside the neuron"s cell membrane o. High concentration of k+ and a- (negatively charged protein ions) inside the neuron"s cell membrane.
