KP351 Lecture Notes - Lecture 7: Tibialis Anterior Muscle, Fast Fourier Transform, Long Term Ecological Research Network
20 Mar 2020
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Document Summary
Not all muscle bers are the same so di erent recordings are possible. Record emg signal during activity (baseline and fatigue situation) Fatigue is indicated by shifting to lower frequencies. Relationship between emg amplitude and force output is generally linear (isometric contraction) Incremental changes in muscle force are not linearly related to amplitude during concentric contractions. Type of muscular contraction (isometric vs dynamic) Potential role of various agonist and antagonist. M max is the max amount of potential that a muscle can respond to. H re ex is 10-15 % of your m wave. Emg can provide us information about what is happening on the level of the sensory system. Stimulus to spinal cord and then back to muscle. Split signal up in to equal time series sections (bins) Subtract the experimental signal from the control signal (both are treated in the same fashion) Facilitation > the muscle activity that was there is now gone, sensation normally activated it.
