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Delayed inhibition of an anticipatory action during motion extrapolation
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Marinovic, Welber, Reid, Campbell S., Plooy, Annaliese M., Riek, Stephan and Tresilian, James (2010) Delayed inhibition of an anticipatory action during motion extrapolation. Behavioral and Brain Functions, Vol.6 . Article no. 22. doi:10.1186/1744-9081-6-22 ISSN 1744-9081.
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Official URL: http://dx.doi.org/10.1186/1744-9081-6-22
Abstract
Background: Continuous visual information is important for movement initiation in a variety of motor tasks.
However, even in the absence of visual information people are able to initiate their responses by using motion
extrapolation processes. Initiation of actions based on these cognitive processes, however, can demand more
attentional resources than that required in situations in which visual information is uninterrupted. In the
experiment reported we sought to determine whether the absence of visual information would affect the latency
to inhibit an anticipatory action.
Methods: The participants performed an anticipatory timing task where they were instructed to move in
synchrony with the arrival of a moving object at a determined contact point. On 50% of the trials, a stop sign
appeared on the screen and it served as a signal for the participants to halt their movements. They performed the
anticipatory task under two different viewing conditions: Full-View (uninterrupted) and Occluded-View (occlusion of
the last 500 ms prior to the arrival at the contact point).
Results: The results indicated that the absence of visual information prolonged the latency to suppress the
anticipatory movement.
Conclusion: We suggest that the absence of visual information requires additional cortical processing that creates
competing demand for neural resources. Reduced neural resources potentially causes increased reaction time to
the inhibitory input or increased time estimation variability, which in combination would account for prolonged
latency.
Item Type: | Journal Article | ||||
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Subjects: | R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Psychology | ||||
Library of Congress Subject Headings (LCSH): | Human mechanics, Visual perception, Neurosciences | ||||
Journal or Publication Title: | Behavioral and Brain Functions | ||||
Publisher: | BioMed Central Ltd. | ||||
ISSN: | 1744-9081 | ||||
Official Date: | 2010 | ||||
Dates: |
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Volume: | Vol.6 | ||||
Page Range: | Article no. 22 | ||||
DOI: | 10.1186/1744-9081-6-22 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Open Access (Creative Commons) |
Data sourced from Thomson Reuters' Web of Knowledge
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