title: In search of a reliable electrophysiological marker of oculomotor inhibition of return.
abstract: Inhibition of return (IOR) operationalizes a behavioral phenomenon characterized by slower responding to cued, relative to uncued, targets. Two independent forms of IOR have been theorized: input-based IOR occurs when the oculomotor system is quiescent, while output-based IOR occurs when the oculomotor system is engaged. EEG studies forbidding eye movements have demonstrated that reductions of target-elicited P1 components are correlated with IOR magnitude, but when eye movements occur, P1 effects bear no relationship to behavior. We expand on this work by adapting the cueing paradigm and recording event-related potentials: IOR is caused by oculomotor responses to central arrows or peripheral onsets and measured by key presses to peripheral targets. Behavioral IOR is observed in both conditions, but P1 reductions are absent in the central arrow condition. By contrast, arrow and peripheral cues enhance Nd, especially over contralateral electrode sites.
authors: School of Psychology, Faculty of Science, University of Nottingham Malaysia Campus, Semenyih, Malaysia.
authors: Jason
authors: J
authors: Satel
authors: Matthew D
authors: MD
authors: Hilchey
authors: Zhiguo
authors: Z
authors: Wang
authors: Caroline S
authors: CS
authors: Reiss
authors: Raymond M
authors: RM
authors: Klein
mesh_terms: D001288:Attention / Q000502:physiology*; D001921:Brain / Q000502:physiology*; D003463:Cues; D004569:Electroencephalography; D005071:Evoked Potentials / Q000502:physiology*; D005133:Eye Movements / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D011597:Psychomotor Performance / Q000502:physiology; D011930:Reaction Time / Q000502:physiology; D014796:Visual Perception / Q000502:physiology*; D055815:Young Adult
keywords: Cueing; Event-related potentials; Eye movements; Inhibition of return; Oculomotor activation; Sensory and motor processing