pFC Neurons Reflect Categorical Decisions about Ambiguous Stimuli
Name
Roy-2014-pFC Neurons Reflect.pdf
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782.87 KB
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Author(s)
Miller, Earl K.
Roy, Jefferson
Buschman, Tim
Date Issued
January 2014
Journal
Journal of Cognitive Neuroscience
Publisher
MIT Press
Citation
Roy, Jefferson E., Timothy J. Buschman, and Earl K. Miller. “pFC Neurons Reflect Categorical Decisions About Ambiguous Stimuli.” Journal of Cognitive Neuroscience (January 9, 2014): 1–9. © Massachusetts Institute of Technology
Version
Final published version
Abstract
We examined whether pFC neuron activity reflects categorical decisions in monkeys categorizing ambiguous stimuli. A morphing system was used to systematically vary stimulus shape and precisely define category boundaries. Ambiguous stimuli were centered on a category boundary, that is, they were a mix of 50% of two prototypes and therefore had no category information, so monkeys guessed at their category membership. We found that the monkey's trial-by-trial decision about the category membership of an ambiguous image was reflected in pFC activity. Activity to the same ambiguous image differed significantly, depending on which category the monkey had assigned it to. This effect only occurred when that scheme was behaviorally relevant. These indicate that pFC activity reflects categorical decisions.
MIT Department
Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences
Massachusetts Institute of Technology. Media Laboratory
Picower Institute for Learning and Memory
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1162/jocn_a_00568
