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Context-dependent encoding in songbird auditory forebrain
Descriptive
TitleInfo
Title
Context-dependent encoding in songbird auditory forebrain
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Dong
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Mingwen
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1989-
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Mingwen Dong
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author
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Vicario
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David S.
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David S. Vicario
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Advisory Committee
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chair
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Gallistel
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Charles Randy
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Charles Randy Gallistel
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Advisory Committee
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internal member
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(type = family)
McGann
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John
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John McGann
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Advisory Committee
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internal member
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Rutgers University
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degree grantor
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Graduate School - New Brunswick
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theses
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2016
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2016-05
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2016
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xx
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eng
Abstract
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Deviants are stimuli that violate the ongoing sequence or distribution of sensory events; they are potentially salient and the sensory system constantly monitors them. However, detecting a deviant is not a trivial process and requires to compare the current stimulus with prior memories or predictions. Traditionally, deviance detection has been studied in both humans and animals by presenting pure tones in a paradigm in which a rare tone stimulus (the oddball) occurs at random in a repeated sequence of a different tone (the standard). The current study seeks to more fully investigate the process and neural substrate of auditory deviance detection by using several paradigms, including both an extension of the traditional oddball approach that uses complex sounds as stimuli and also a new context paradigm. Multi-unit auditory responses to these stimuli were recorded from the auditory forebrain of awake male zebra finches. Results show that an oddball effect (larger responses to a sound when it is deviant than when it is common) can be elicited with complex stimuli like zebra finch calls (as well as with tones), and that the effect magnitude increases as common and deviant stimuli become more different acoustically. These results are consistent with a simple form of stimulus-specific adaptation that generalizes to similar sounds. However, the order in which blocks of stimuli were presented changed the size of the oddball effect, suggesting a role for a memory of stimulus patterns that persists over longer durations and across many intervening stimuli. In the new context paradigm, where deviance could be defined mathematically, the neural response to a given stimulus depended on the larger context in which it was presented, again suggesting a perceptual learning effect. These experiments advances the study of deviance detection by using neural data to identify and separate the longer term effects of stimulus familiarity and pattern from the immediate effects of presentation order and relative frequency that are studied in simple oddball paradigm.
Subject
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Topic
Psychology
Subject
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Topic
Songbirds
Subject
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Topic
Auditory perception
Subject
(authority = ETD-LCSH)
Topic
Brain--Localization of functions
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Rutgers University Electronic Theses and Dissertations
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ETD_7056
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electronic resource
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application/pdf
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text/xml
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1 online resource (vi, 36 p. : ill.)
Note
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M.S.
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Includes bibliographical references
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by Mingwen Dong
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Title
Graduate School - New Brunswick Electronic Theses and Dissertations
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rucore19991600001
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NjNbRU
Identifier
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doi:10.7282/T3571F4M
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ETD graduate
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Rights
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The author owns the copyright to this work.
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Name
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Dong
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Mingwen
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Permission or license
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2016-03-10 15:09:42
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Mingwen Dong
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Rutgers University. Graduate School - New Brunswick
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Author Agreement License
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I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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2016-05-31
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2017-05-31
Type
Embargo
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after May 31st, 2017.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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windows xp
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