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Consider the experiment in which the person pulls on a bar in response to a sound....

Consider the experiment in which the person pulls on a bar in response to a sound. EMGs are recorded. Which result demonstrates feed-forward? Which result demonstrates feed-back?

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Answer #1

When a person pulls up the bar there are two types of force motions happening. Feed back and feed forward. Feed-forward motion is formed due to the adjustments made by the nervous system to adapt to the muscles stress created during the pull-up. Whereas, the feedback motion is formed by the muscles as a result of mechanical perturbations. The muscles adjust themselves to the mechanical changes that happen during the pull-up and down of the bar to balance the body and to prevent bone muscles from being damaged or getting teared off.

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