Temporal judgements of internal and external events in persons with and without autism

Consciousness and Cognition 17 (1):203-209 (2008)

Authors
John Lyons
London School of Economics
Abstract
When participants make judgments about the onset of self-initiated movements they typically report the movement occurred earlier than it had [Obhi, S. S., & Haggard, P. . Free will and free won’t. American Scientific, 92, 358–365.]. One interpretation is that feed-forward processes lead to awareness of the movement prior to execution. Because individuals with autism experience reduced preparatory activity prior to a voluntary movement, the present study sought to determine whether these anticipatory biases are exhibited by persons with autism. Participants watched a dot move in a circle and pressed the spacebar any time after one revolution. A tone either followed the participants’ voluntary movement or was computer generated. Participants in both groups made anticipatory judgements regarding movement initiation . When the movement and tone occurred together this anticipatory bias was also present, regardless of which event participants focused on. Individuals with autism appear to have access to a similar representation of voluntary movements, however this representation may be more variable
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DOI 10.1016/j.concog.2007.03.001
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Conscious Intention and Motor Cognition.Patrick Haggard - 2005 - Trends in Cognitive Sciences 9 (6):290-295.

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