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Abstract:
The purpose of the current study was to investigate the
relationship of imagery control of the motor system and the visual
system. In experiments 1-3 participants performed a dual-tapping
task, imaged performing the task, observed a model perform the
task, or imaged observing a model perform the task. All
participants made a verbal report for each completed dual-tap. The
difference between experiments was the performance bias information
provided to the participants. Experiment 1 biases were; a)
bilateral and ipsilateral dual-tapping should produce similar
tapping performance; b) bilateral dual-tapping should produce a
relatively larger decrement in tapping performance; and c)
ipsilateral dual-tapping should produce a relatively larger
decrement in tapping performance. Reports from participants who
actually performed the tapping or imaged performing the tapping
indicated fewer dual-taps per s and more dual-tap variability in
the bilateral compared to the ipsilateral condition. Reports from
participants who observed the model perform or imaged a model
performing indicated a dual-tapping rate that matched the
experimental biases. In experiments 4-6 participants imaged
performing the dual-tapping conditions or imaged observing
themselves perform the dual-tapping conditions. Experiments 2a, 2b,
and 2c were distinguished by the laterality performance bias
information provided to the participants. The general pattern of
results from all six experiments indicated that imagery control of
the motor system was independent of the visual system.
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