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White noise analysis of visual selectivity in area MT during fixation and eye movements
Descriptive
TitleInfo
Title
White noise analysis of visual selectivity in area MT during fixation and eye movements
Name
(type = personal)
NamePart
(type = family)
Hartmann
NamePart
(type = given)
Till Sebastian
NamePart
(type = date)
1980-
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Till Hartmann
Role
RoleTerm
(authority = RULIB)
author
Name
(type = personal)
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(type = family)
Tepper
NamePart
(type = given)
James M
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James M Tepper
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
chair
Name
(type = personal)
NamePart
(type = family)
Paré
NamePart
(type = given)
Denis
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Denis Paré
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Advisory Committee
Role
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(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Koos
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(type = given)
Tibor
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Tibor Koos
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Krekelberg
NamePart
(type = given)
Bart
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Bart Krekelberg
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Goldberg
NamePart
(type = given)
Michael E
DisplayForm
Michael E Goldberg
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
outside member
Name
(type = corporate)
NamePart
Rutgers University
Role
RoleTerm
(authority = RULIB)
degree grantor
Name
(type = corporate)
NamePart
Graduate School - Newark
Role
RoleTerm
(authority = RULIB)
school
TypeOfResource
Text
Genre
(authority = marcgt)
theses
OriginInfo
DateCreated
(qualifier = exact)
2012
DateOther
(qualifier = exact);
(type = degree)
2012-01
Place
PlaceTerm
(type = code)
xx
Language
LanguageTerm
(authority = ISO639-2b);
(type = code)
eng
Subject
(authority = RUETD)
Topic
Behavioral and Neural Sciences
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(type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
(type = RULIB)
ETD
Identifier
ETD_3717
PhysicalDescription
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electronic resource
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application/pdf
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text/xml
Extent
xiii, 136 p. : ill.
Note
(type = degree)
Ph.D.
Note
(type = bibliography)
Includes bibliographical references
Note
(type = vita)
Includes vita
Note
(type = statement of responsibility)
by Till Sebastian Hartmann
Abstract
(type = abstract)
It is crucial for survival to rapidly and accurately determine the location of objects. As humans, we constantly estimate positions of stationary and moving targets around us, and do so successfully, despite eye movements that induce motion on the retina. One vital brain area has been identified for localization and motion processing: the middle temporal area (MT). We set forth to investigate the responses of single cells and local field potentials (LFP) in area MT of the rhesus macaque in order to study its tuning properties during eye movements. We presented randomly positioned, flickering bars to map neurons’ visual responses. Meanwhile, we superimposed a fixation point to keep the eyes still or a moving random dot pattern, which induced Optokinetic Nystagmus, a specific type of eye movement. During fixation, we found the responses of area MT to be—contrary to the current beliefs in literature—polarity sensitive (project 1). Our findings indicate that the receptive field (RF) position in area MT is yoked to the eye, independent of eye position and eye movement. That is, the cells are coding in an eye-centered reference frame and the cells’ RFs do not shift (project 2). We found that in area MT, eye position modulated not only neurons’ firing rates; the power in the gamma spectrum exhibited gain modulation as well—gain fields (project 3). Finally, we show dramatic changes during fast eye movements of both neuronal firing rates and LFP. The LFP modulation depended highly on the frequency band, i.e. theta power was strongly enhanced while the stimulus frequencies in the gamma range were decreased. We speculate that the LFP modulations allow us to identify layer specific differences. Furthermore, these modulations lead us to suggest a new mechanism for saccadic suppression: de-synchronization (project 4). In conclusion, we advanced the knowledge on motion processing and perceptual stability and proposed a novel role for de-synchronization in the phenomenon of saccadic suppression.
Subject
(authority = ETD-LCSH)
Topic
Brain—Localization of functions
Subject
(authority = ETD-LCSH)
Topic
Vision
Subject
(authority = ETD-LCSH)
Topic
Visual evoked response
Identifier
(type = hdl)
http://hdl.rutgers.edu/1782.1/rucore10002600001.ETD.000063972
RelatedItem
(type = host)
TitleInfo
Title
Graduate School - Newark Electronic Theses and Dissertations
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rucore10002600001
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(displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier
(type = doi)
doi:10.7282/T3NV9H98
Genre
(authority = ExL-Esploro)
ETD doctoral
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Rights
RightsDeclaration
(ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder
(type = personal)
Name
FamilyName
Hartmann
GivenName
Till
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime
(encoding = w3cdtf);
(qualifier = exact);
(point = start)
2011-12-02 13:08:43
AssociatedEntity
Name
Till Hartmann
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - Newark
AssociatedObject
Type
License
Name
Author Agreement License
Detail
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.
RightsEvent
DateTime
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(qualifier = exact);
(point = start)
2012-01-31
DateTime
(encoding = w3cdtf);
(qualifier = exact);
(point = end)
2014-01-30
Type
Embargo
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after January 30th, 2014.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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Technical
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4650496
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