Electromyographic Specificity During Covert Information Processing

doi:10.1111/j.1469-8986.1981.tb01819.x

Electromyographic Specificity During Covert Information Processing

2007-01-30

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DOI：10.1111/j.1469-8986.1981.tb01819.x

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ABSTRACTSubjects performed tasks of rhyme, volume‐discrimination, association, evaluation, and self‐reference for verbal stimuli. The stimuli and overt response (pressing one of two microswitches) were constant across tasks and subjects. Oral and nonoral electromyographic (EMG) and cardiac activity were monitored continuously. We found that the depth of processing was associated with enhanced EMG activity of the speech muscles, but was unrelated to cardiac and nonoral EMG activity. Moreover, this association was observed only when subjects were covertly analyzing the stimuli. It was concluded that the pattern of perioral EMG activity can reflect the extent to which encoding operations are directed toward meaning.

Electromyographic Specificity During Covert Information Processing

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