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- W3081486610 abstract "Introduction Many goal-directed and spontaneous everyday activities (e.g., planning, mind wandering) rely on an internal focus of attention. Internally directed cognition (IDC) was shown to differ from externally directed cognition in a range of neurophysiological indicators such as electroencephalogram (EEG) alpha activity and eye behavior. Methods In this EEG-eye-tracking coregistration study, we investigated effects of attention direction on EEG alpha activity and various relevant eye parameters. We used an established paradigm to manipulate internal attention demands in the visual domain within tasks by means of conditional stimulus masking. Results Consistent with previous research, IDC involved relatively higher EEG alpha activity (lower alpha desynchronization) at posterior cortical sites. Moreover, IDC was characterized by greater pupil diameter (PD), fewer microsaccades, fixations, and saccades. These findings show that internal versus external cognition is associated with robust differences in several indicators at the neural and perceptual level. In a second line of analysis, we explored the intrinsic temporal covariation between EEG alpha activity and eye parameters during rest. This analysis revealed a positive correlation of EEG alpha power with PD especially in bilateral parieto-occipital regions. Conclusion Together, these findings suggest that EEG alpha activity and PD represent time-sensitive indicators of internal attention demands, which may be involved in a neurophysiological gating mechanism serving to shield internal cognition from irrelevant sensory information." @default.
- W3081486610 created "2020-09-01" @default.
- W3081486610 creator A5003059605 @default.
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- W3081486610 date "2020-08-20" @default.
- W3081486610 modified "2023-10-10" @default.
- W3081486610 title "Neurophysiological indicators of internal attention: An electroencephalography–eye‐tracking coregistration study" @default.
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- W3081486610 doi "https://doi.org/10.1002/brb3.1790" @default.
- W3081486610 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7559625" @default.