Search Efficiency but Not Response Interference Affects Visual Selection in Frontal Eye Field
Two manipulations of a visual search task were used to test the hypothesis that the discrimination of a target from distractors by visually responsive neurons in the frontal eye field (FEF) marks the outcome and conclusion of visual processing instead of saccade preparation. First, search efficiency...
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| Veröffentlicht in: | Neuron (Cambridge, Mass.) Mass.), 2001-05, Vol.30 (2), p.583-591 |
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| creator | Sato, Takashi Murthy, Aditya Thompson, Kirk G. Schall, Jeffrey D. |
| description | Two manipulations of a visual search task were used to test the hypothesis that the discrimination of a target from distractors by visually responsive neurons in the frontal eye field (FEF) marks the outcome and conclusion of visual processing instead of saccade preparation. First, search efficiency was reduced by increasing the similarity of the distractors to the target. Second, response interference was introduced by infrequently changing the location of the target in the array. Both manipulations increased reaction time, but only the change in search efficiency affected the time needed to select the target by visually responsive neurons. This result indicates that visually responsive neurons in FEF form an explicit representation of the location of the target in the image. |
| doi_str_mv | 10.1016/S0896-6273(01)00304-X |
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| source | MEDLINE; Elsevier ScienceDirect Journals Complete; Cell Press Free Archives; EZB-FREE-00999 freely available EZB journals |
| subjects | Animals Conditioning, Operant - physiology Discrimination (Psychology) Fixation, Ocular frontal eye field Macaca mulatta Macaca radiata Neurons - physiology Reaction Time - physiology Reinforcement (Psychology) Reward Visual Fields - physiology Visual Perception - physiology |
| title | Search Efficiency but Not Response Interference Affects Visual Selection in Frontal Eye Field |
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