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ERIC Number: EJ778671
Record Type: Journal
Publication Date: 2003-May
Pages: 23
Abstractor: Author
Reference Count: 0
ISBN: N/A
ISSN: ISSN-0010-0277
Attention Maintains Mental Extrapolation of Target Position: Irrelevant Distractors Eliminate Forward Displacement after Implied Motion
Kerzel, Dirk
Cognition, v88 n1 p109-131 May 2003
Observers' judgments of the final position of a moving target are typically shifted in the direction of implied motion ("representational momentum"). The role of attention is unclear: visual attention may be necessary to maintain or halt target displacement. When attention was captured by irrelevant distractors presented during the retention interval, forward displacement after implied target motion disappeared, suggesting that attention may be necessary to maintain mental extrapolation of target motion. In a further corroborative experiment, the deployment of attention was measured after a sequence of implied motion, and faster responses were observed to stimuli appearing in the direction of motion. Thus, attention may guide the mental extrapolation of target motion. Additionally, eye movements were measured during stimulus presentation and retention interval. The results showed that forward displacement with implied motion does not depend on eye movements. Differences between implied and smooth motion are discussed with respect to recent neurophysiological findings.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A