Nerve Conduction Lec 2011 Class Notes

Nerve Conduction - Recording Motor Units to Determine Recording Motor Units to Determine Nerve Conduction Velocity& Synaptic Delay Nerve

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Unformatted text preview: Recording Motor Units to Determine Recording Motor Units to Determine Nerve Conduction Velocity & Synaptic Delay Nerve Conduction Velocity & Synaptic Delay BIO335 – 2011 Craig Evinger 1. Each muscle , e.g. ADM, is made up of thousands of individual muscle fibers . 2 . Each muscle fiber receives an input from only one α-motoneuron, but each α- motoneuron innervates many muscle fibers. 4. A motor unit is one α- motoneuron and all of the muscle fibers that it innervates . 3. A motor neuron pool is all the α-motoneurons that innervate one muscle . 2 This Weeks’ Lab – Changing What’s Recorded Adapted from: Bear Conners & Paradiso, Neuroscience: Exploring the Brain We will measure the motor unit activity of the abductor digiti minimi (ADM) muscle 1 3 4 + + + Recording Muscle Activity – Single Motor Unit- + End plate Region Tendon +- + Active Electrode Reference Electrode Active Electrode Reference Electrode Time Amplitude EMG signal = Reference – Active ---- + + + + + + +- - - -...
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This note was uploaded on 12/06/2011 for the course BIO 335 taught by Professor Cabot during the Fall '08 term at SUNY Stony Brook.

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Nerve Conduction - Recording Motor Units to Determine Recording Motor Units to Determine Nerve Conduction Velocity& Synaptic Delay Nerve

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