Rhythmic fluctuations in evidence accumulation during decision making in the human brain.
Categorical choices are preceded by the accumulation of sensory evidence in favor of one action or another. Current models describe evidence accumulation as a continuous process occurring at a constant rate, but this view is inconsistent with accounts of a psychological refractory period during sequ...
| Huvudupphovsmän: | , , , |
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| Materialtyp: | Journal article |
| Språk: | English |
| Publicerad: |
2012
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| _version_ | 1826307230019878912 |
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| author | Wyart, V de Gardelle, V Scholl, J Summerfield, C |
| author_facet | Wyart, V de Gardelle, V Scholl, J Summerfield, C |
| author_sort | Wyart, V |
| collection | OXFORD |
| description | Categorical choices are preceded by the accumulation of sensory evidence in favor of one action or another. Current models describe evidence accumulation as a continuous process occurring at a constant rate, but this view is inconsistent with accounts of a psychological refractory period during sequential information processing. During multisample perceptual categorization, we found that the neural encoding of momentary evidence in human electrical brain signals and its subsequent impact on choice fluctuated rhythmically according to the phase of ongoing parietal delta oscillations (1-3 Hz). By contrast, lateralized beta-band power (10-30 Hz) overlying human motor cortex encoded the integrated evidence as a response preparation signal. These findings draw a clear distinction between central and motor stages of perceptual decision making, with successive samples of sensory evidence competing to pass through a serial processing bottleneck before being mapped onto action. |
| first_indexed | 2024-03-07T06:59:47Z |
| format | Journal article |
| id | oxford-uuid:ff56b43e-e18a-49b5-9b15-2d0d8868f77b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:59:47Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:ff56b43e-e18a-49b5-9b15-2d0d8868f77b2022-03-27T13:44:10ZRhythmic fluctuations in evidence accumulation during decision making in the human brain.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:ff56b43e-e18a-49b5-9b15-2d0d8868f77bEnglishSymplectic Elements at Oxford2012Wyart, Vde Gardelle, VScholl, JSummerfield, CCategorical choices are preceded by the accumulation of sensory evidence in favor of one action or another. Current models describe evidence accumulation as a continuous process occurring at a constant rate, but this view is inconsistent with accounts of a psychological refractory period during sequential information processing. During multisample perceptual categorization, we found that the neural encoding of momentary evidence in human electrical brain signals and its subsequent impact on choice fluctuated rhythmically according to the phase of ongoing parietal delta oscillations (1-3 Hz). By contrast, lateralized beta-band power (10-30 Hz) overlying human motor cortex encoded the integrated evidence as a response preparation signal. These findings draw a clear distinction between central and motor stages of perceptual decision making, with successive samples of sensory evidence competing to pass through a serial processing bottleneck before being mapped onto action. |
| spellingShingle | Wyart, V de Gardelle, V Scholl, J Summerfield, C Rhythmic fluctuations in evidence accumulation during decision making in the human brain. |
| title | Rhythmic fluctuations in evidence accumulation during decision making in the human brain. |
| title_full | Rhythmic fluctuations in evidence accumulation during decision making in the human brain. |
| title_fullStr | Rhythmic fluctuations in evidence accumulation during decision making in the human brain. |
| title_full_unstemmed | Rhythmic fluctuations in evidence accumulation during decision making in the human brain. |
| title_short | Rhythmic fluctuations in evidence accumulation during decision making in the human brain. |
| title_sort | rhythmic fluctuations in evidence accumulation during decision making in the human brain |
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