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    Neural Substrates of Social Behavior in the Primate Brain

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    Author
    Putnam, Philip
    Issue Date
    2019
    Keywords
    amygdala
    Multi-dimensional selectivity
    rhesus
    Advisor
    Cowen, Stephen
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction, presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Embargo
    Release after 07/15/2019
    Abstract
    Many brain structures are known for carrying out more than one function. Among these structures the amygdala emerged particularly versatile, as it has been implicated in cognitive processes that range from sensory-perceptual, to decision-making, and to overt behaviors accompanied by autonomic responses. While no single functional definition can capture its role in the brain, the diversity of functions linked to the amygdala is likely reflected in the response properties of its component neurons. The goal of this study was to determine the extent to which single neurons in the amygdala can exhibit multiple types of stimulus-selectivity and/or task-related responses in the context of a complex task. The task involved learning and decision making based on stimulus-reward associations where the choices were presented as multiple simultaneously playing videos with social and non-social content. Here we report that amygdala neurons are tuned to multiple stimulus and task dimensions. Furthermore a disproportionate number of neurons responded to all of the features examined. This demonstration of multi-dimensional selectivity in the amygdala provides evidence that the amygdala is not composed exclusively of discrete circuits, but rather of common overlapping populations that encode multiple types of information.
    Type
    text
    Electronic Dissertation
    Degree Name
    Ph.D.
    Degree Level
    doctoral
    Degree Program
    Graduate College
    Neuroscience
    Degree Grantor
    University of Arizona
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