title: Early event-related potentials indicate context-specific target processing for eye and hand motor systems.
abstract: Concurrent eye and hand movements toward a common visual target require different motor programs based on identical visual input. We used event-related brain potentials (ERP) to determine if and when the processing of the visual target differs for the two motor systems. The N2, an index for target evaluation, was more negative for the target of a hand than of an eye movement in two experiments. A possible interpretation for this finding is different visual target processing. Targets for hand movements require a different weighting of visual information, for example concerning features such as surface structure which are important for hand but not for eye movements. In experiment 2, the early C1-component, which had an average maximum at 67 ms following target onset, was significantly more negative when subjects pointed at the stimuli. Traditionally, the C1 has been regarded as a sensory component, but recent studies have linked it to higher order processing, such as attention and expectations. Thus, the present data indicate that target processing for eye or hand movements is already context-specific during early visual information processing. We suggest that differences in a target's relevance for upcoming movements modify target processing as well as sensory expectations.
authors: Department of Physiology, Anatomy and Genetics, Oxford University, South Parks Road, Oxford, OX1 3QX England, United Kingdom; Social, Cognitive and Affective Neuroscience Unit, Faculty of Psychology, University of Vienna, Liebiggasse 5, 1010 Vienna, Austria(1). Electronic address: claudia.wehrspaun@dpag.ox.ac.uk.
authors: Claudia C
authors: CC
authors: Wehrspaun
authors: Daniela M
authors: DM
authors: Pfabigan
authors: Uta
authors: U
authors: Sailer
mesh_terms: D000328:Adult; D001921:Brain / Q000502:physiology*; D004569:Electroencephalography; D005074:Evoked Potentials, Visual; D005260:Female; D006225:Hand / Q000502:physiology; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology; D010775:Photic Stimulation; D011597:Psychomotor Performance / Q000502:physiology*; D012438:Saccades / Q000502:physiology; D014796:Visual Perception / Q000502:physiology*; D055815:Young Adult
keywords: Attention; C1-component; EEG; Eye–hand-coordination; N2-component; Sensory expectation
references: Biofeedback Self Regul. 1979 Jun;4(2):145-54
references: 476190
references: BMC Neurosci. 2010 May 06;11:59
references: 20459601
references: Electroencephalogr Clin Neurophysiol. 1951 May;3(2):237-40
references: 14840404
references: Biol Psychol. 2005 May;69(2):229-42
references: 15804549
references: Neurosci Biobehav Rev. 2011 Apr;35(5):1237-53
references: 21185860
references: Brain Res Cogn Brain Res. 2001 Mar;11(1):147-56
references: 11240117
references: Brain Res. 2006 Aug 11;1105(1):7-19
references: 16448629
references: Exp Brain Res. 1986;62(2):303-11
references: 3709715
references: Prog Brain Res. 2002;140:341-8
references: 12508601
references: J Vis. 2012 Jan 04;12(1):
references: 22219310
references: Psychophysiology. 2004 Jan;41(1):157-60
references: 14693011
references: J Exp Psychol Hum Percept Perform. 1981 Oct;7(5):1019-30
references: 6457106
references: Int J Psychophysiol. 2009 Sep;73(3):279-86
references: 19409424
references: Biol Psychol. 2012 Oct;91(2):172-84
references: 22750676
references: Nat Rev Neurosci. 2001 Sep;2(9):635-42
references: 11533731
references: Exp Brain Res. 2012 Aug;221(1):1-18
references: 22777102
references: Clin Neurophysiol. 2007 Feb;118(2):372-80
references: 17141565
references: Psychophysiology. 2005 Jan;42(1):33-42
references: 15720579
references: Brain Res Cogn Brain Res. 2005 Dec;25(3):900-12
references: 16303290
references: J Exp Psychol Hum Percept Perform. 2002 Dec;28(6):1432-46
references: 12542136
references: Neuroreport. 2003 Mar 3;14(3):467-9
references: 12634505
references: Nat Neurosci. 2004 May;7(5):542-8
references: 15107859
references: Neuroreport. 1998 Jun 22;9(9):2015-8
references: 9674585
references: Int J Med Sci. 2005;2(4):147-54
references: 16239953
references: Cereb Cortex. 2003 May;13(5):486-99
references: 12679295
references: Hum Brain Mapp. 2009 May;30(5):1723-33
references: 18711710
references: Neuropsychologia. 1971 Mar;9(1):97-113
references: 5146491
references: Annu Rev Neurosci. 2011;34:309-31
references: 21456958
references: Psychophysiology. 2000 Mar;37(2):190-203
references: 10731769
references: Cereb Cortex. 2008 Nov;18(11):2629-36
references: 18321874
references: Electroencephalogr Clin Neurophysiol. 1996 Jul;99(1):19-27
references: 8758967
references: J Neurophysiol. 2006 Jul;96(1):352-62
references: 16571731
references: Exp Brain Res. 1991;83(3):502-12
references: 2026193
references: J Neurosci Methods. 2004 Mar 15;134(1):9-21
references: 15102499