Intermittent Brain Motor Control Observed in Continuous Tracking Task
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In the present study, the author analyzed the hand movement in one-dimensional visuo-manual tracking task. When the target moved slowly or unpredictably, the hand velocity contained many bell-shaped components lasting several-hundred milliseconds. When the target moved fast and sinusoidally, on the other hand, subjects seemed to adjust the movement by a unit of cycle. These findings suggest that our brain divides temporal axis into discrete segments and plans/adjusts motor commands for each segment. This “intermittent motor control” may be the brain’s fundamental strategy for achieving good motor performance with slow sensorimotor system.
KeywordsContinuous Tracking Task Brain Motor Control Pseudorandom Case Sinusoidal Target Motion Movement Epoch
This work was supported by a Grant-in-Aid for Scientific Research on Innovative Areas “The study on the neural dynamics for under- standing communication in terms of complex hetero systems (No.4103)” (21120012) of MEXT, Japan.
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