In search of a reliable electrophysiological marker of oculomotor inhibition of return.
Bottom Line: 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.By contrast, arrow and peripheral cues enhance Nd, especially over contralateral electrode sites.
Affiliation: School of Psychology, Faculty of Science, University of Nottingham Malaysia Campus, Semenyih, Malaysia.Show MeSH
Related in: MedlinePlus
Mentions: Statistical analyses were performed on the P1, N1, and Nd ERP component amplitudes, which were derived from EEG data as described above. The mean ERP amplitudes for each trial type are presented in Table 1, and the grand-averaged ERP waveforms are presented in Figure 2 (central cueing) and Figure 3 (peripheral cueing). Repeated measures ANOVAs and planned comparisons were performed separately for each ERP component and are presented below.
Affiliation: School of Psychology, Faculty of Science, University of Nottingham Malaysia Campus, Semenyih, Malaysia.