Loss of attentional stimulus selection after extrastriate cortical lesions in macaques.
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| Title: | Loss of attentional stimulus selection after extrastriate cortical lesions in macaques. |
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| Authors: | DeWeerd, Peter, Peralta, Modesto R., Desimone, Robert, Ungerleider, Leslie G. |
| Source: | Nature Neuroscience. Aug99, Vol. 2 Issue 8, p753. 6p. |
| Subjects: | Visual perception, Neurosciences, Physiology |
| Abstract: | Many objects in natural visual scenes compete for attention. To identify the neural mechanisms necessary for visual attention, we made restricted lesions, affecting different quadrants of the visual field but leaving one quadrant intact, in extrastriate cortical areas V4 and TEO of two monkeys. Monkeys were trained to discriminate the orientation of a target grating surrounded by distracters. As distracter contrast increased, performance deteriorated in quadrants affected by V4 and TEO lesions, but not in the normal quadrant. Performance in affected quadrants was restored by increasing the contrast of the target relative to distracters. Thus, without V4 and TEO, visual attention is 'captured' by strong stimuli, regardless of their behavioral relevance. [ABSTRACT FROM AUTHOR] |
| Copyright of Nature Neuroscience is the property of Springer Nature 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 |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 8829328 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Loss of attentional stimulus selection after extrastriate cortical lesions in macaques. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22DeWeerd%2C+Peter%22">DeWeerd, Peter</searchLink><br /><searchLink fieldCode="AR" term="%22Peralta%2C+Modesto+R%2E%22">Peralta, Modesto R.</searchLink><br /><searchLink fieldCode="AR" term="%22Desimone%2C+Robert%22">Desimone, Robert</searchLink><br /><searchLink fieldCode="AR" term="%22Ungerleider%2C+Leslie+G%2E%22">Ungerleider, Leslie G.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nature+Neuroscience%22">Nature Neuroscience</searchLink>. Aug99, Vol. 2 Issue 8, p753. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Visual+perception%22">Visual perception</searchLink><br /><searchLink fieldCode="DE" term="%22Neurosciences%22">Neurosciences</searchLink><br /><searchLink fieldCode="DE" term="%22Physiology%22">Physiology</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Many objects in natural visual scenes compete for attention. To identify the neural mechanisms necessary for visual attention, we made restricted lesions, affecting different quadrants of the visual field but leaving one quadrant intact, in extrastriate cortical areas V4 and TEO of two monkeys. Monkeys were trained to discriminate the orientation of a target grating surrounded by distracters. As distracter contrast increased, performance deteriorated in quadrants affected by V4 and TEO lesions, but not in the normal quadrant. Performance in affected quadrants was restored by increasing the contrast of the target relative to distracters. Thus, without V4 and TEO, visual attention is 'captured' by strong stimuli, regardless of their behavioral relevance. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nature Neuroscience is the property of Springer Nature 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.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=8829328 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1038/11234 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 753 Subjects: – SubjectFull: Visual perception Type: general – SubjectFull: Neurosciences Type: general – SubjectFull: Physiology Type: general Titles: – TitleFull: Loss of attentional stimulus selection after extrastriate cortical lesions in macaques. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: DeWeerd, Peter – PersonEntity: Name: NameFull: Peralta, Modesto R. – PersonEntity: Name: NameFull: Desimone, Robert – PersonEntity: Name: NameFull: Ungerleider, Leslie G. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug99 Type: published Y: 1999 Identifiers: – Type: issn-print Value: 10976256 Numbering: – Type: volume Value: 2 – Type: issue Value: 8 Titles: – TitleFull: Nature Neuroscience Type: main |
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