The Use of Auditory Cues in Anticipatory Control of Grasping Forces

in Motor Control
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Visual and haptic integration has been examined extensively, however little is known about alternative premovement sensory information to help in the anticipatory control of prehension. This study explored the concept of using auditory cues as an alternative premovement cue. Individuals lifted champagne flutes filled with various levels of water; and one group was given a sound cue before lifting. Sounds provided a precue regarding fluid level and hence mass. Results showed that auditory cues were used to predict the “target force” required to lift the masses, as evidenced by scaling of grip rates as a function of mass in the auditory cue group only. It was hypothesized that individuals used the auditory cues to preprogram the grasping forces produced during the lifting movement.

Gonzalez is with McMaster University—Kinesiology, Hamilton, Ontario, Canada. Dubrowski is with SickKids Learning Institute, SickKids Hospital, Toronto, Ontario, Canada. Carnahan is with the University of Toronto—Department of Occupational Science and Occupational Therapy, Toronto, Ontario, Canada.

Motor Control
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