Neuronal Mechanisms of Visual Categorization: An Abstract View on Decision Making
Categorization is our ability to flexibly assign sensory stimuli into discrete, behaviorally relevant groupings. Categorical decisions can be used to study decision making more generally by dissociating category identity of stimuli from the actions subjects use to signal their decisions. Here we dis...
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| Veröffentlicht in: | Annual review of neuroscience 2016-07, Vol.39 (1), p.129-147 |
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| container_title | Annual review of neuroscience |
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| creator | Freedman, David J Assad, John A |
| description | Categorization is our ability to flexibly assign sensory stimuli into discrete, behaviorally relevant groupings. Categorical decisions can be used to study decision making more generally by dissociating category identity of stimuli from the actions subjects use to signal their decisions. Here we discuss the evidence for such abstract categorical encoding in the primate brain and consider the relationship with other perceptual decision paradigms. Recent work on visual categorization has examined neuronal activity across a hierarchically organized network of cortical areas in monkeys trained to group visual stimuli into arbitrary categories. This has revealed a transformation of visual-feature encoding in early visual cortical areas into more flexible categorical representations in downstream parietal and prefrontal areas. These neuronal category representations are encoded as abstract internal cognitive states because they are not rigidly linked with either specific sensory stimuli or the actions that the monkeys use to signal their categorical choices. |
| doi_str_mv | 10.1146/annurev-neuro-071714-033919 |
| format | Article |
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Categorical decisions can be used to study decision making more generally by dissociating category identity of stimuli from the actions subjects use to signal their decisions. Here we discuss the evidence for such abstract categorical encoding in the primate brain and consider the relationship with other perceptual decision paradigms. Recent work on visual categorization has examined neuronal activity across a hierarchically organized network of cortical areas in monkeys trained to group visual stimuli into arbitrary categories. This has revealed a transformation of visual-feature encoding in early visual cortical areas into more flexible categorical representations in downstream parietal and prefrontal areas. 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| language | eng |
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| source | Annual Reviews; MEDLINE |
| subjects | Animals Behavior - physiology Brain categorization Cognition - physiology Decision making Decision Making - physiology Humans learning and memory Neurons Neurosciences parietal cortex perception Photic Stimulation - methods prefrontal cortex recognition vision Visual Cortex - physiology Visual Perception - physiology Visualization |
| title | Neuronal Mechanisms of Visual Categorization: An Abstract View on Decision Making |
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