Alterations in Resting-State Activity Relate to Performance in a Verbal Recognition Task |
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Authors: | Rocío A López Zunini Jean-Philippe Thivierge Shanna Kousaie Christine Sheppard Vanessa Taler |
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Institution: | 1. School of Psychology, University of Ottawa, Ottawa, Ontario, Canada.; 2. Bruyère Research Institute, Ottawa, Ontario, Canada.; University Medical Center Groningen UMCG, The Netherlands, |
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Abstract: | In the brain, resting-state activity refers to non-random patterns of intrinsic activity occurring when participants are not actively engaged in a task. We monitored resting-state activity using electroencephalogram (EEG) both before and after a verbal recognition task. We show a strong positive correlation between accuracy in verbal recognition and pre-task resting-state alpha power at posterior sites. We further characterized this effect by examining resting-state post-task activity. We found marked alterations in resting-state alpha power when comparing pre- and post-task periods, with more pronounced alterations in participants that attained higher task accuracy. These findings support a dynamical view of cognitive processes where patterns of ongoing brain activity can facilitate –or interfere– with optimal task performance. |
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