Manual responses and saccades in chronic and recovered hemispatial neglect: a study using visual search

Neuropsychologia
Monika HarveyIain D Gilchrist

Abstract

Hemispatial neglect affects both the ability to respond to targets on the contralesional side of space and to programme saccades to such targets. In the current study, we looked in detail at saccade programming and manual reaction times (RTs) in a range of visual search tasks, in which task difficulty was systematically increased by changing the nature of the distractors. In condition 1, the target was presented with no distractors. In the other conditions, displays contained three distractors that were changed across conditions to manipulate similarity to the target and so task difficulty. We tested two neglect patients, one chronic, one recovered along with two RCVA control patients and 12 age-matched controls. Both neglect patients studied could successfully execute saccades into the neglected field when the target was presented alone. However, a dissociation emerged between the two patients when the target was presented with distractor items. Patient ERs first saccade to target performance in the three search conditions revealed clear effects of distractor type. In contrast for the recovered patient AF, the left/right difference was present for all search displays and appeared to be constant regardless of distractor type. T...Continue Reading

References

Jan 1, 1979·Neuropsychologia·L G Ungerleider, C A Christensen
Sep 1, 1990·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·E LàdavasC Umiltà
Jan 1, 1986·Experimental Brain Research·D L RobinsonW Keys
Mar 1, 1973·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·F ChédruF Lhermitte
Jul 1, 1980·Electroencephalography and Clinical Neurophysiology·K M PerrymanD B Lindsley
Aug 1, 1995·Perception & Psychophysics·J E Hoffman, B Subramaniam
Jul 1, 1995·Vision Research·E KowlerE Blaser
May 1, 1995·Annals of Neurology·C Pierrot-DeseillignyA I Vermersch
May 27, 1993·Nature·L ChelazziR Desimone
Jun 1, 1996·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·R Walker, A W Young
Nov 7, 1996·Nature·A A Kustov, D L Robinson
Mar 1, 1997·Vision Research·J M Findlay
Jun 1, 1997·Canadian Journal of Experimental Psychology = Revue Canadienne De Psychologie Expérimentale·D E WilliamsM Behrmann
Dec 3, 1998·Experimental Brain Research·W Heide, D Kömpf
Jan 5, 1999·Brain : a Journal of Neurology·H O KarnathJ Dichgans
Jan 19, 2000·Trends in Cognitive Sciences·S P Liversedge, J M Findlay
Mar 21, 2001·Neuropsychologia·B OlkP J Murphy
Apr 17, 2001·The Behavioral and Brain Sciences·J M Findlay, R Walker
Jan 1, 1997·Journal of Cognitive Neuroscience·E LàdavasP Gangemi
Oct 1, 1989·Journal of Cognitive Neuroscience·M EglinR T Knight
Jul 1, 1993·Journal of Cognitive Neuroscience·M GraboweckyA Treisman
Jun 1, 1994·Psychonomic Bulletin & Review·J M Wolfe
Sep 1, 1995·European Journal of Neurology : the Official Journal of the European Federation of Neurological Societies·M T JahnkeK H Mauritz

❮ Previous
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Citations

Aug 24, 2005·Nature Neuroscience·Yutaka KomuraTaketoshi Ono
Mar 5, 2009·Neuropsychological Rehabilitation·Asnat Bar-Haim ErezNachum Soroker
Nov 29, 2008·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Radek PtakArmin Schnider
Jun 16, 2015·Journal of the International Neuropsychological Society : JINS·Bruno FimmWill Spijkers
Jul 6, 2014·Journal of Contaminant Hydrology·Svantje TreumannDeclan Page
Dec 17, 2009·Consciousness and Cognition·Stefan Van der Stigchel, Tanja C W Nijboer
Jul 27, 2005·Vision Research·Ute Leonards, Nicholas E Scott-Samuel
Nov 17, 2009·Neuropsychologia·Radek PtakRené Müri
Nov 11, 2003·Brain : a Journal of Neurology·R J Leigh, Christopher Kennard
Nov 2, 2011·Human Brain Mapping·Alison R LaneAmanda Ellison
May 10, 2012·PLoS Computational Biology·Christos A Ouzounis
Jun 13, 2018·Royal Society Open Science·Bettina OlkRegis Kopper
Nov 6, 2020·Journal of Clinical and Experimental Neuropsychology·Antonia F Ten BrinkStefan Van der Stigchel
Jul 2, 2020·Neuropsychologia·Jolene A Cox, Anne M Aimola Davies
Jul 18, 2021·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Joris A ElshoutStefan Van der Stigchel

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