Finger_Twitch

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http://trc.ucdavis.edu/biosci10v/bis10v/week10/nervemuscle.gif
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Motor Units: All muscle fibers are controlled by a single motor neuron. So how does the brain determine the number of active motor units required for a muscle to perform a given task? Utilizes sensory information from the stretch receptors in the muscle and associated tendons and joint capsules.
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http://www.answers.com/topic/action-potential A. Schematic of an electrophysiological recording of an action potential showing the various phases which occur as the wave passes a point on a cell membrane . B. An actual action potential (blue trace) recorded from a mouse hippocampal pyramidal neuron. In this case, the action potential was stimulated by a prolonged pulse of current (brown trace; approx. 2 micro Amps) passed into the cell through the recording electrode. This method of stimulation distorts the AP compared to the schematic, in that the "real" action potential is sitting atop a voltage offset caused by the current pulse. Thus, for
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This note was uploaded on 11/14/2011 for the course ECE 3820 taught by Professor Wang during the Fall '11 term at GWU.

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Finger_Twitch -...

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