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      Midfrontal theta phase coordinates behaviorally relevant brain computations during cognitive control

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      Creators
      Duprez, Joan
      Gulbinaite, Rasa
      Cohen, M.S.
      Date of Archiving
      2021
      Archive
      Radboud Data Repository
      DOI
      https://doi.org/10.34973/ps5j-zw88
      Related publications
      Midfrontal theta phase coordinates behaviorally relevant brain computations during cognitive control  
      Publication type
      Dataset
      Access level
      Open access
      Please use this identifier to cite or link to this item: https://hdl.handle.net/2066/234049   https://hdl.handle.net/2066/234049
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      Organization
      Neuroinformatics
      Cognitive Neuroscience
      Audience(s)
      Life sciences
      Languages used
      English
      Key words
      Cognitive control; Oscillations; eeg
      Abstract
      Neural oscillations are thought to provide a cyclic time frame for orchestrating brain computations. Following this assumption, midfrontal theta oscillations have recently been proposed to temporally organize brain computations during conflict processing. Using a multivariate analysis approach, we show that brain-behavior relationships during conflict tasks are modulated according to the phase of ongoing endogenous midfrontal theta oscillations recorded by scalp EEG. We found reproducible results in two independent datasets, using two different conflict tasks: brain-behavior relationships (correlation between reaction time and theta power) were theta phase-dependent in a subject-specific manner, and these “behaviorally optimal” theta phases were also associated with fronto-parietal cross-frequency dynamics emerging as theta phase-locked beta power bursts. These effects were present regardless of the strength of conflict. Thus, these results provide empirical evidence that midfrontal theta oscillations are involved in cyclically orchestrating brain computations likely related to response execution during the tasks rather than purely related to conflict processing. More generally, this study supports the hypothesis that phase-based computation is an important mechanism giving rise to cognitive processing.
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      • Datasets [1528]
      • Faculty of Medical Sciences [89076]
      • Faculty of Science [34958]
       
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