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PubMed Publications| Keyword search (4,163 papers available) |  |
"Protzner AB" Authored Publications:
| Title | Authors | PubMed ID | |
|---|---|---|---|
| 1 | EEG complexity during mind wandering: A multiscale entropy investigation | Cnudde K; Kim G; Murch WS; Handy TC; Protzner AB; Kam JWY; | 36621593 CONCORDIA |
| 2 | Pre-treatment EEG signal variability is associated with treatment success in depression. | Jaworska N, Wang H, Smith DM, Blier P, Knott V, Protzner AB | 29159049 CSBN |
| Title: | EEG complexity during mind wandering: A multiscale entropy investigation | ||||
| Authors: | Cnudde K, Kim G, Murch WS, Handy TC, Protzner AB, Kam JWY | ||||
| Link: | pubmed.ncbi.nlm.nih.gov/36621593/ | ||||
| DOI: | 10.1016/j.neuropsychologia.2023.108480 | ||||
| Publication: | Neuropsychologia | ||||
| Keywords: | EEG complexity; Global processing; Local processing; Mind wandering; Multiscale entropy; | ||||
| PMID: | 36621593 | Category: | Date Added: | 2023-01-09 | |
| Dept Affiliation: |
CONCORDIA
1 Department of Psychology, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada, T2N 1N4. Electronic address: kelsey.cnudde@ucalgary.ca. 2 Department of Psychology, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada, T2N 1N4. 3 Department of Psychology, University of British Columbia, 2136 West Mall, Vancouver, British Columbia, Canada, V6T 1Z4; Department of Sociology & Anthropology, Concordia University, 1455 de Maisonneuve Blvd W, Montreal, Quebec, Canada, H3G 1M8. 4 Department of Psychology, University of British Columbia, 2136 West Mall, Vancouver, British Columbia, Canada, V6T 1Z4. 5 Department of Psychology, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada, T2N 1N4; Hotchkiss Brain Institute, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta, Canada, T2N 1N4; Mathison Centre for Mental Health, University of Calgary, 3280 Hospital |
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Description: |
Our attention often drifts away from the ongoing task to task-unrelated thoughts, a phenomenon commonly referred to as mind wandering. Ample studies dedicated to delineating its electrophysiological correlates have revealed distinct event-related potentials (ERP) and spectral patterns associated with mind wandering. It remains less clear whether the complexity of the electroencephalography (EEG) changes when our minds wander, a metric that captures the predictability of the time series at varying timescales. Accordingly, this study investigated whether mind wandering impacts EEG signal complexity. We further explored whether such effects differ across timescales, and change in a context-dependent manner as indexed by global and local levels of processing. To address this, we recorded participants' EEG while they completed Navon's global and local processing task and occasionally reported whether they were on-task or mind wandering throughout the task. We found that brain signal complexity as indexed by multiscale entropy decreased at medium timescales in centro-parietal regions and increased at coarse timescales in anterior and posterior regions during mind wandering, as compared to the on-task state, for global processing. Moreover, global processing showed increased complexity at fine to medium timescales compared to local processing. Finally, behavioral performance revealed a context-dependent effect in accuracy measures, with mind wandering showing lower accuracy compared to the on-task state only during the local condition. Taken together, these results indicate that changes in brain signal complexity across timescales may be an important feature of mind wandering. |
