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Surfing the attentional waves during visual curve tracing: Evidence from the sustained posterior contralateral negativity.

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Title: Surfing the attentional waves during visual curve tracing: Evidence from the sustained posterior contralateral negativity.
Authors: Lefebvre, Christine (AUTHOR), Dell'acqua, Roberto (AUTHOR), Roelfsema, Pieter R. (AUTHOR), Jolicœur, Pierre (AUTHOR)
Source: Psychophysiology. Nov2011, Vol. 48 Issue 11, p1510-1516. 7p. 2 Diagrams, 1 Graph.
Subjects: Attention research, Selectivity (Psychology), Visual perception testing, Visual cortex, Visual evoked response
Abstract: Mental curve tracing is the process by which a contour is covertly followed between two landmarks. Completion time of this task increases as the distance between the landmarks does, even though the Euclidian distance is constant. This has been taken as evidence that attention does not cover a contour instantly, but rather moves from one point to another until the whole contour has been covered. This article provides an electrophysiological measurement of the time course of this spread of attention in humans using a sustained contralateral posterior negative (SPCN) event-related potential component. This component being elicited only when stimuli are presented laterally, the position of lateralization was varied to modulate the onset of this SPCN. Curves that became lateralized further from the central starting point yielded a later SPCN onset than curves that lateralized nearer. This provides converging evidence that attention moves along the curve. [ABSTRACT FROM AUTHOR]
Copyright of Psychophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Surfing the attentional waves during visual curve tracing: Evidence from the sustained posterior contralateral negativity.
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  Data: <searchLink fieldCode="AR" term="%22Lefebvre%2C+Christine%22">Lefebvre, Christine</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dell'acqua%2C+Roberto%22">Dell'acqua, Roberto</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Roelfsema%2C+Pieter+R%2E%22">Roelfsema, Pieter R.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jolicœur%2C+Pierre%22">Jolicœur, Pierre</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Psychophysiology%22">Psychophysiology</searchLink>. Nov2011, Vol. 48 Issue 11, p1510-1516. 7p. 2 Diagrams, 1 Graph.
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  Data: <searchLink fieldCode="DE" term="%22Attention+research%22">Attention research</searchLink><br /><searchLink fieldCode="DE" term="%22Selectivity+%28Psychology%29%22">Selectivity (Psychology)</searchLink><br /><searchLink fieldCode="DE" term="%22Visual+perception+testing%22">Visual perception testing</searchLink><br /><searchLink fieldCode="DE" term="%22Visual+cortex%22">Visual cortex</searchLink><br /><searchLink fieldCode="DE" term="%22Visual+evoked+response%22">Visual evoked response</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Mental curve tracing is the process by which a contour is covertly followed between two landmarks. Completion time of this task increases as the distance between the landmarks does, even though the Euclidian distance is constant. This has been taken as evidence that attention does not cover a contour instantly, but rather moves from one point to another until the whole contour has been covered. This article provides an electrophysiological measurement of the time course of this spread of attention in humans using a sustained contralateral posterior negative (SPCN) event-related potential component. This component being elicited only when stimuli are presented laterally, the position of lateralization was varied to modulate the onset of this SPCN. Curves that became lateralized further from the central starting point yielded a later SPCN onset than curves that lateralized nearer. This provides converging evidence that attention moves along the curve. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Psychophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/j.1469-8986.2011.01228.x
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      – Code: eng
        Text: English
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        Type: general
      – SubjectFull: Selectivity (Psychology)
        Type: general
      – SubjectFull: Visual perception testing
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      – SubjectFull: Visual cortex
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      – SubjectFull: Visual evoked response
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      – TitleFull: Surfing the attentional waves during visual curve tracing: Evidence from the sustained posterior contralateral negativity.
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              M: 11
              Text: Nov2011
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              Y: 2011
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