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Latency/accuracy trade-offs during sequences of saccades

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TypeOfResource
Text
TitleInfo (ID = T-1)
Title
Latency/accuracy trade-offs during sequences of saccades
SubTitle
PartName
PartNumber
NonSort
Identifier (displayLabel = ); (invalid = )
ETD_2269
Identifier (type = hdl)
http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000052164
Language (objectPart = )
LanguageTerm (authority = ISO639-2); (type = code)
eng
Genre (authority = marcgt)
theses
Subject (ID = SBJ-1); (authority = RUETD)
Topic
Psychology
Subject (ID = SBJ-2); (authority = ETD-LCSH)
Topic
Eye--Movements--Psychological aspects
Subject (ID = SBJ-3); (authority = ETD-LCSH)
Topic
Saccadic eye movements
Abstract
For many motor behaviors, the more time devoted to planning a movement, the higher the spatial accuracy. To determine whether trade-offs between planning time and accuracy apply to saccadic eye movements, the present study investigated whether Fitts's Law, which holds that movement time depends on traveled distance and the required level of precision, applies to sequences of saccades. Saccades were made in sequence to 4 stationary target circles. Target eccentricities and target sizes varied. The time to scan the targets increased with Fitts's Index of Difficulty (ID), (defined as log 2 (2S / D), where S is target separation and D is target diameter), showing that Fitts's Law can apply to sequences of saccades. The increase was due mainly to a greater frequency of secondary saccades, rather than to increases in the latency of primary saccades. Analyses of saccadic accuracy showed that subjects used secondary saccades, rather than prolonging saccadic latency, to improve landing accuracy. Even where subjects were explicitly asked to increase saccadic latency (Experiment 2), the spatial distribution of landing positions of primary saccades did not change. These results showed that increasing the time available for saccadic planning did not improve the spatial precision of saccades. Saccades differ from some other motor behaviors, where optimal performance depends on trading off the duration of primary movements with the occurrence of corrections (Meyer et al., 1988). For saccades, the only apparently viable strategy to improve accuracy is to issue more corrections.
PhysicalDescription
Form (authority = gmd)
electronic resource
Extent
v, 61 p. : ill.
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application/pdf
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text/xml
Note (type = degree)
M.S.
Note (type = bibliography)
Includes bibliographical references (p. 59-61)
Note (type = statement of responsibility)
by Chia-Chien Wu
Name (ID = NAME-1); (type = personal)
NamePart (type = family)
Wu
NamePart (type = given)
Chia-Chien
NamePart (type = date)
1983-
Role
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author
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Chia-Chien Wu
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NamePart (type = family)
Kowler
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Eileen
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chair
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Advisory Committee
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Eileen Kowler
Name (ID = NAME-3); (type = personal)
NamePart (type = family)
Singh
NamePart (type = given)
Manish
Role
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internal member
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Advisory Committee
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Manish Singh
Name (ID = NAME-4); (type = personal)
NamePart (type = family)
Torres
NamePart (type = given)
Elizabeth
Role
RoleTerm (authority = RULIB); (type = )
internal member
Affiliation
Advisory Committee
DisplayForm
Elizabeth Torres
Name (ID = NAME-1); (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB); (type = )
degree grantor
Name (ID = NAME-2); (type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm (authority = RULIB); (type = )
school
OriginInfo
DateCreated (point = ); (qualifier = exact)
2010
DateOther (qualifier = exact); (type = degree)
2010-01
Place
PlaceTerm (type = code)
xx
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
Location
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NjNbRU
Identifier (type = doi)
doi:10.7282/T3D50N3R
Genre (authority = ExL-Esploro)
ETD graduate
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Rights

RightsDeclaration (AUTHORITY = GS); (ID = rulibRdec0006)
The author owns the copyright to this work.
Copyright
Status
Copyright protected
Notice
Note
Availability
Status
Open
Reason
Permission or license
Note
RightsHolder (ID = PRH-1); (type = personal)
Name
FamilyName
Wu
GivenName
Chia-Chien
Role
Copyright Holder
RightsEvent (ID = RE-1); (AUTHORITY = rulib)
Type
Permission or license
Label
Place
DateTime
2009-12-02 13:16:29
Detail
AssociatedEntity (ID = AE-1); (AUTHORITY = rulib)
Role
Copyright holder
Name
Chia-Chien Wu
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject (ID = AO-1); (AUTHORITY = rulib)
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.
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ETD
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application/pdf
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application/x-tar
FileSize (UNIT = bytes)
1556480
Checksum (METHOD = SHA1)
8e58a3418d9fb9cec73635ade33d17b9d7176aca
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