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The distractor positivity ( Pd) signals lowering of attentional priority: Evidence from event-related potentials and individual differences.

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Title: The distractor positivity ( Pd) signals lowering of attentional priority: Evidence from event-related potentials and individual differences.
Authors: Burra, Nicolas, Kerzel, Dirk
Source: Psychophysiology. Jul2014, Vol. 51 Issue 7, p685-696. 12p.
Subjects: Electrophysiology, Visual memory, Liquid crystal displays, Electroencephalography, University of Geneva, Eye movements
Abstract: We investigated the effects of task demands and individual differences on the allocation of attention. Using the same stimuli, participants indicated the orientation of a line contained in a shape singleton (identification task) or the presence of singletons (detection task). Shape singletons in the identification task elicited a contralateral negativity ( N2pc) whereas shape singletons in the detection task elicited a contralateral positivity ( Pd). We suggest that the reduction of attentional priority of a salient stimulus, reflected by the Pd, occurred more rapidly with the less demanding detection task. Further, fewer distractible participants showed a larger N2pc to lateral color distractors than highly distractible participants. We suggest that highly distractible participants developed compensatory mechanisms to suppress distracting stimuli. [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: The distractor positivity ( Pd) signals lowering of attentional priority: Evidence from event-related potentials and individual differences.
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  Data: <searchLink fieldCode="AR" term="%22Burra%2C+Nicolas%22">Burra, Nicolas</searchLink><br /><searchLink fieldCode="AR" term="%22Kerzel%2C+Dirk%22">Kerzel, Dirk</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Psychophysiology%22">Psychophysiology</searchLink>. Jul2014, Vol. 51 Issue 7, p685-696. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Electrophysiology%22">Electrophysiology</searchLink><br /><searchLink fieldCode="DE" term="%22Visual+memory%22">Visual memory</searchLink><br /><searchLink fieldCode="DE" term="%22Liquid+crystal+displays%22">Liquid crystal displays</searchLink><br /><searchLink fieldCode="DE" term="%22Electroencephalography%22">Electroencephalography</searchLink><br /><searchLink fieldCode="DE" term="%22University+of+Geneva%22">University of Geneva</searchLink><br /><searchLink fieldCode="DE" term="%22Eye+movements%22">Eye movements</searchLink>
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  Data: We investigated the effects of task demands and individual differences on the allocation of attention. Using the same stimuli, participants indicated the orientation of a line contained in a shape singleton (identification task) or the presence of singletons (detection task). Shape singletons in the identification task elicited a contralateral negativity ( N2pc) whereas shape singletons in the detection task elicited a contralateral positivity ( Pd). We suggest that the reduction of attentional priority of a salient stimulus, reflected by the Pd, occurred more rapidly with the less demanding detection task. Further, fewer distractible participants showed a larger N2pc to lateral color distractors than highly distractible participants. We suggest that highly distractible participants developed compensatory mechanisms to suppress distracting stimuli. [ABSTRACT FROM AUTHOR]
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  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/psyp.12215
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        Type: general
      – SubjectFull: Visual memory
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      – SubjectFull: Liquid crystal displays
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      – SubjectFull: University of Geneva
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      – SubjectFull: Eye movements
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              Text: Jul2014
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