RUcore: Rutgers University Community Repository
Timing of saccadic eye movements during an accumulative visual search task
Descriptive
TitleInfo
Title
Timing of saccadic eye movements during an accumulative visual search task
Name
(type = personal)
NamePart
(type = family)
Wu
NamePart
(type = given)
Chia-Chien
NamePart
(type = date)
1983-
DisplayForm
CHIA-CHIEN WU
Role
RoleTerm
(authority = RULIB)
author
Name
(type = personal)
NamePart
(type = family)
Kowler
NamePart
(type = given)
Eileen
DisplayForm
Eileen Kowler
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
chair
Name
(type = personal)
NamePart
(type = family)
Feldman
NamePart
(type = given)
Jacob
DisplayForm
Jacob Feldman
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Singh
NamePart
(type = given)
Manish
DisplayForm
Manish Singh
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Rucci
NamePart
(type = given)
Michele
DisplayForm
Michele Rucci
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 - New Brunswick
Role
RoleTerm
(authority = RULIB)
school
TypeOfResource
Text
Genre
(authority = marcgt)
theses
OriginInfo
DateCreated
(qualifier = exact)
2012
DateOther
(qualifier = exact);
(type = degree)
2012-10
Place
PlaceTerm
(type = code)
xx
Language
LanguageTerm
(authority = ISO639-2b);
(type = code)
eng
Abstract
(type = abstract)
The quality of visual performance depends on how efficiently saccades can be programmed. During each intersaccadic pause, the visual system needs to evaluate the fixated content and also determine where to look next. Most prior studies focused only on the spatial element of saccadic decisions but ignored the effect of time. A good search strategy should be able to apportion time between saccade production rate and the accuracy of target selection to maximize the acquisition of information. The current work is interested in how time is used in saccadic planning and how people decide when to look next. To answer these questions, a novel experiment was designed where subjects were asked to search through arrays of targets (thin circles containing oriented lines) embedded in non-targets (thicker circles), either to estimate a statistical property of the targets (mean orientation of the lines), or to just look at the targets. Varying the visual similarity of targets and non-targets had large effects on both the probability of landing on a target and the number of circles fixated per second in both estimation and the look-only tasks. Also, the eye dwelled longer on targets than on distractors even in the look-only task, where there was no need to evaluate target content. Saccadic dwell times, however, were about the same, regardless of whether the eye moved next to a target or to a distractor. The results show that the timing of saccades depends on (1) the currently fixated content, (2) accumulated evidence in eccentric vision and also (3) an internal timer. The strategy, which incorporates these three factors rather than simply relies on any one of them, may guarantee efficient use of time in saccadic planning.
Subject
(authority = RUETD)
Topic
Psychology
RelatedItem
(type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
(type = RULIB)
ETD
RelatedItem
(type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier
(type = local)
rucore19991600001
Identifier
ETD_4181
Identifier
(type = hdl)
http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000067027
PhysicalDescription
Form
(authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
vii, 75 p. : ill.
Note
(type = degree)
Ph.D.
Note
(type = bibliography)
Includes bibliographical references
Note
(type = statement of responsibility)
by Chia-Chien Wu
Location
PhysicalLocation
(authority = marcorg);
(displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Subject
(authority = ETD-LCSH)
Topic
Eye--Movements
Identifier
(type = doi)
doi:10.7282/T3445K7S
Genre
(authority = ExL-Esploro)
ETD doctoral
Back to the top
Rights
RightsDeclaration
(ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder
(type = personal)
Name
FamilyName
WU
GivenName
CHIA-CHIEN
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime
(encoding = w3cdtf);
(qualifier = exact);
(point = start)
2012-07-28 14:00:04
AssociatedEntity
Name
CHIA-CHIEN WU
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
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
(encoding = w3cdtf);
(qualifier = exact);
(point = start)
2012-10-31
DateTime
(encoding = w3cdtf);
(qualifier = exact);
(point = end)
2014-10-31
Type
Embargo
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after October 31st, 2014.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
Back to the top
Technical
FileSize
(UNIT = bytes)
1793024
OperatingSystem
(VERSION = 5.1)
windows xp
ContentModel
ETD
MimeType
(TYPE = file)
application/pdf
MimeType
(TYPE = container)
application/x-tar
FileSize
(UNIT = bytes)
1802240
Checksum
(METHOD = SHA1)
bfdffe4298f3a8ab1f5084a9dc8ac7779f97e262
Back to the top
Statistical Profile