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In search of a reliable electrophysiological marker of oculomotor inhibition of return.

Satel J, Hilchey MD, Wang Z, Reiss CS, Klein RM - Psychophysiology (2014)

Bottom Line: 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.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.

View Article: PubMed Central - PubMed

Affiliation: School of Psychology, Faculty of Science, University of Nottingham Malaysia Campus, Semenyih, Malaysia.

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Related in: MedlinePlus

Target-elicited ERP waveforms and topographic maps for the peripheral cue condition recorded from ipsilateral and contralateral parieto-occipital electrodes (PO7/8; indicated as solid black dots in the topographic maps). Time windows in the ERP plots indicate the windows used to calculate ERP component amplitudes (see text for details). Time windows with a solid outline represent significant differences between cued and uncued ERP components (t tests, p < .05); for peripheral cueing, only the ipsilateral P1 and contralateral Nd components showed a cueing effect. Topographic heat maps associated with each time window/ERP component for targets appearing on the left and right sides are presented, with red indicating most positive activation and blue indicating most negative activation.
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fig03: Target-elicited ERP waveforms and topographic maps for the peripheral cue condition recorded from ipsilateral and contralateral parieto-occipital electrodes (PO7/8; indicated as solid black dots in the topographic maps). Time windows in the ERP plots indicate the windows used to calculate ERP component amplitudes (see text for details). Time windows with a solid outline represent significant differences between cued and uncued ERP components (t tests, p < .05); for peripheral cueing, only the ipsilateral P1 and contralateral Nd components showed a cueing effect. Topographic heat maps associated with each time window/ERP component for targets appearing on the left and right sides are presented, with red indicating most positive activation and blue indicating most negative activation.

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.


In search of a reliable electrophysiological marker of oculomotor inhibition of return.

Satel J, Hilchey MD, Wang Z, Reiss CS, Klein RM - Psychophysiology (2014)

Target-elicited ERP waveforms and topographic maps for the peripheral cue condition recorded from ipsilateral and contralateral parieto-occipital electrodes (PO7/8; indicated as solid black dots in the topographic maps). Time windows in the ERP plots indicate the windows used to calculate ERP component amplitudes (see text for details). Time windows with a solid outline represent significant differences between cued and uncued ERP components (t tests, p < .05); for peripheral cueing, only the ipsilateral P1 and contralateral Nd components showed a cueing effect. Topographic heat maps associated with each time window/ERP component for targets appearing on the left and right sides are presented, with red indicating most positive activation and blue indicating most negative activation.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4286015&req=5

fig03: Target-elicited ERP waveforms and topographic maps for the peripheral cue condition recorded from ipsilateral and contralateral parieto-occipital electrodes (PO7/8; indicated as solid black dots in the topographic maps). Time windows in the ERP plots indicate the windows used to calculate ERP component amplitudes (see text for details). Time windows with a solid outline represent significant differences between cued and uncued ERP components (t tests, p < .05); for peripheral cueing, only the ipsilateral P1 and contralateral Nd components showed a cueing effect. Topographic heat maps associated with each time window/ERP component for targets appearing on the left and right sides are presented, with red indicating most positive activation and blue indicating most negative activation.
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.

Bottom Line: 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.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.

View Article: PubMed Central - PubMed

Affiliation: School of Psychology, Faculty of Science, University of Nottingham Malaysia Campus, Semenyih, Malaysia.

Show MeSH
Related in: MedlinePlus