Perception of timing of kinesthetic stimuli
作者:
Stephen Grill,
William Rosenberger,
Karen Boyle,
Mae Cannon,
Mark Hallett,
期刊:
NeuroReport
(OVID Available online 1998)
卷期:
Volume 9,
issue 18
页码: 4001-4005
ISSN:0959-4965
年代: 1998
出版商: OVID
关键词: Kinesthesia;Perception;Velocity
数据来源: OVID
摘要:
A psychophysical method was used to estimate the timing of perception of kinesthetic stimuli with different velocities in normal volunteers. A 1 ms auditory click occurred randomly before or after an imposed flexion movement at either 20, 40 or 60 deg/s of the meta-carpophalangeal joint. Subjects reported whether the click was perceived before or after the movement onset (experiment 1) or perception of movement velocity (experiment 2). The time at which there was a 50% chance that subjects reported movement or velocity perception after the click was taken as an estimate of the time subjects perceived the stimuli. The difference in time of perceived movement velocity discrimination and movement onset was only significant when the velocity was 20 deg/s (52 ms). This suggests that movement onset and identification of the velocity of the faster movements are perceived nearly simultaneously.
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