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Since Courts' (1942) review, several experiments have been reported on the effects of induced muscle tension on performance, but to the author's knowledge none have been concerned with the basis of the relationship. In a theoretical paper Meyer (1953) suggested that the effects of induced muscle tension on performance are the result of simultaneous responses occurring at the level of the motor cortex. Though a useful concept, Meyer fails to consider the involvement of the reticular activating system and level of arousal in muscle tension phenomena (Delafresnaye, Adrian, Bremer, & Jasper, 1954).

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