Perception of Size of Movement Patterns

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Abstract
Physiological data suggest that perception and memory of kinesthesis may differ depending on whether a movement pattern is actively commanded or passively induced. An attempt was made to demonstrate a difference between these two types of movements by employing a cross-modal visual recognition test of size perception. Absolute and algebraic errors in the matching of kinesthesis with vision were measured. Positive algebraic errors were seen indicating that subjects' perception for the size of kinesthetic movement patterns was magnified as compared to vision. Active kinesthesis was matched with vision more accurately than was passive kinesthesis, and the data yielded information about the differential contribution of active and passive muscle compartments to the global kinesthetic perception of voluntary movement. Cross-modal matching of kinesthesis with vision was in certain cases as accurate as visual intramodal matching. It was argued that active kinesthesis has internal references, and vision has external references to facilitate the similar-size recognition performance.

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