Spatial attention speeds discrimination without awareness in blindsight.
An intimate relationship is often assumed between visual attention and visual awareness. Using a subject, patient GY, with the neurological condition of "blindsight" we show that although attention may be a necessary precursor to visual awareness it is not a sufficient one. Using a Posner...
| Main Authors: | , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
2004
|
| _version_ | 1826259057386717184 |
|---|---|
| author | Kentridge, R Heywood, C Weiskrantz, L |
| author_facet | Kentridge, R Heywood, C Weiskrantz, L |
| author_sort | Kentridge, R |
| collection | OXFORD |
| description | An intimate relationship is often assumed between visual attention and visual awareness. Using a subject, patient GY, with the neurological condition of "blindsight" we show that although attention may be a necessary precursor to visual awareness it is not a sufficient one. Using a Posner endogenous spatial cueing paradigm we showed that the time our subject needed to discriminate the orientation of a stimulus was reduced if he was cued to the location of the stimulus. This reaction-time advantage was obtained without any decrease in discrimination accuracy and cannot therefore be attributed to speed-error trade-off or differences in bias between cued and uncued locations. As a result of his condition GY was not aware of the stimuli to which processing was attentionally facilitated. Attention cannot, therefore be a sufficient condition for awareness. |
| first_indexed | 2024-03-06T18:43:52Z |
| format | Journal article |
| id | oxford-uuid:0dd3fa78-ef3e-4d87-933e-b7593099dcc7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:43:52Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | oxford-uuid:0dd3fa78-ef3e-4d87-933e-b7593099dcc72022-03-26T09:42:35ZSpatial attention speeds discrimination without awareness in blindsight.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0dd3fa78-ef3e-4d87-933e-b7593099dcc7EnglishSymplectic Elements at Oxford2004Kentridge, RHeywood, CWeiskrantz, LAn intimate relationship is often assumed between visual attention and visual awareness. Using a subject, patient GY, with the neurological condition of "blindsight" we show that although attention may be a necessary precursor to visual awareness it is not a sufficient one. Using a Posner endogenous spatial cueing paradigm we showed that the time our subject needed to discriminate the orientation of a stimulus was reduced if he was cued to the location of the stimulus. This reaction-time advantage was obtained without any decrease in discrimination accuracy and cannot therefore be attributed to speed-error trade-off or differences in bias between cued and uncued locations. As a result of his condition GY was not aware of the stimuli to which processing was attentionally facilitated. Attention cannot, therefore be a sufficient condition for awareness. |
| spellingShingle | Kentridge, R Heywood, C Weiskrantz, L Spatial attention speeds discrimination without awareness in blindsight. |
| title | Spatial attention speeds discrimination without awareness in blindsight. |
| title_full | Spatial attention speeds discrimination without awareness in blindsight. |
| title_fullStr | Spatial attention speeds discrimination without awareness in blindsight. |
| title_full_unstemmed | Spatial attention speeds discrimination without awareness in blindsight. |
| title_short | Spatial attention speeds discrimination without awareness in blindsight. |
| title_sort | spatial attention speeds discrimination without awareness in blindsight |
| work_keys_str_mv | AT kentridger spatialattentionspeedsdiscriminationwithoutawarenessinblindsight AT heywoodc spatialattentionspeedsdiscriminationwithoutawarenessinblindsight AT weiskrantzl spatialattentionspeedsdiscriminationwithoutawarenessinblindsight |