Transient binding by time: Neuropsychological evidence from anti-extinction.
Anti-extinction occurs when there is poor report of a single stimulus presented on the contralesional side of space, but better report of the same item when it occurs concurrently with a stimulus on the ipsilesional side (Goodrich and Ward, 1997). We report a series of experiments that examine the f...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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2002
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| _version_ | 1797087162282278912 |
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| author | Humphreys, G Riddoch, M Nys, G Heinke, D |
| author_facet | Humphreys, G Riddoch, M Nys, G Heinke, D |
| author_sort | Humphreys, G |
| collection | OXFORD |
| description | Anti-extinction occurs when there is poor report of a single stimulus presented on the contralesional side of space, but better report of the same item when it occurs concurrently with a stimulus on the ipsilesional side (Goodrich and Ward, 1997). We report a series of experiments that examine the factors that lead to anti-extinction in a patient GK, who has bilateral parietal lesions but more impaired identification of left-side stimuli. We show a pattern of anti-extinction when stimuli are briefly presented, which is followed by an extinction effect when stimuli are left for longer in the visual field. In Experiments 1 and 2 we present evidence that the anti-extinction effects are determined by stimuli onsetting together, and it is not apparent when stimuli are defined by offsets. In Experiments 3 and 4 we report that performance is not strongly affected by whether the same or different tasks are performed on the ipsi- and contralesional stimuli, and the anti-extinction effect also survives trials where eye movements are made to right-side stimuli. Experiment 5 provides evidence that anti-extinction is due to temporal grouping between stimuli, rather than to increased arousal or cueing attention to the contralesional side. Experiment 6 demonstrates that anti-extinction dissociates from GK's conscious perception of when contra- and ipsilesional stimuli occur together. We interpret the data as indicating that there is unconscious and transient temporal binding in vision. |
| first_indexed | 2024-03-07T02:32:06Z |
| format | Journal article |
| id | oxford-uuid:a795e63e-127e-4b5e-93c9-bfe5c318e445 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:32:06Z |
| publishDate | 2002 |
| record_format | dspace |
| spelling | oxford-uuid:a795e63e-127e-4b5e-93c9-bfe5c318e4452022-03-27T02:55:40ZTransient binding by time: Neuropsychological evidence from anti-extinction.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a795e63e-127e-4b5e-93c9-bfe5c318e445EnglishSymplectic Elements at Oxford2002Humphreys, GRiddoch, MNys, GHeinke, DAnti-extinction occurs when there is poor report of a single stimulus presented on the contralesional side of space, but better report of the same item when it occurs concurrently with a stimulus on the ipsilesional side (Goodrich and Ward, 1997). We report a series of experiments that examine the factors that lead to anti-extinction in a patient GK, who has bilateral parietal lesions but more impaired identification of left-side stimuli. We show a pattern of anti-extinction when stimuli are briefly presented, which is followed by an extinction effect when stimuli are left for longer in the visual field. In Experiments 1 and 2 we present evidence that the anti-extinction effects are determined by stimuli onsetting together, and it is not apparent when stimuli are defined by offsets. In Experiments 3 and 4 we report that performance is not strongly affected by whether the same or different tasks are performed on the ipsi- and contralesional stimuli, and the anti-extinction effect also survives trials where eye movements are made to right-side stimuli. Experiment 5 provides evidence that anti-extinction is due to temporal grouping between stimuli, rather than to increased arousal or cueing attention to the contralesional side. Experiment 6 demonstrates that anti-extinction dissociates from GK's conscious perception of when contra- and ipsilesional stimuli occur together. We interpret the data as indicating that there is unconscious and transient temporal binding in vision. |
| spellingShingle | Humphreys, G Riddoch, M Nys, G Heinke, D Transient binding by time: Neuropsychological evidence from anti-extinction. |
| title | Transient binding by time: Neuropsychological evidence from anti-extinction. |
| title_full | Transient binding by time: Neuropsychological evidence from anti-extinction. |
| title_fullStr | Transient binding by time: Neuropsychological evidence from anti-extinction. |
| title_full_unstemmed | Transient binding by time: Neuropsychological evidence from anti-extinction. |
| title_short | Transient binding by time: Neuropsychological evidence from anti-extinction. |
| title_sort | transient binding by time neuropsychological evidence from anti extinction |
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