Spatiotemporal phase slip patterns for visual evoked potentials, covert object naming tasks, and insight moments extracted from 256 channel EEG recordings

Frontiers in Integrative Neuroscience

Neuroscience

Frank Zanow¹  Uwe Graichen²  Ceon Ramon³  Jens Haueisen⁴  Paolo Gargiulo⁵  Thomas R. Knösche⁶ 

[1] ANT Neuro, Hengelo, Netherlands;Department of Biostatistics and Data Science, Karl Landsteiner University of Health Sciences, Krems an der Donau, Austria;Department of Electrical and Computer Engineering, University of Washington, Seattle, WA, United States;Regional Epilepsy Center, Harborview Medical Center, University of Washington, Seattle, WA, United States;Institute of Biomedical Engineering and Informatics, Technische Universität Ilmenau, Ilmenau, Germany;Institute of Biomedical and Neural Engineering, Reykjavik University, Reykjavik, Iceland;Department of Science, Landspitali University Hospital, Reykjavik, Iceland;Max Planck Institute for Human Cognitive and Neurosciences, Leipzig, Germany;

关键词: EEG phase slips;    phase jumps;    cortical neurodynamics;    VEP;    cortical phase transitions;    insight moments;    eureka effects;    visual object naming;   

DOI  :  10.3389/fnint.2023.1087976

 received in 2022-11-02, accepted in 2023-05-19,  发布年份 2023

来源: Frontiers

【 摘 要 】

Phase slips arise from state transitions of the coordinated activity of cortical neurons which can be extracted from the EEG data. The phase slip rates (PSRs) were studied from the high-density (256 channel) EEG data, sampled at 16.384 kHz, of five adult subjects during covert visual object naming tasks. Artifact-free data from 29 trials were averaged for each subject. The analysis was performed to look for phase slips in the theta (4–7 Hz), alpha (7–12 Hz), beta (12–30 Hz), and low gamma (30–49 Hz) bands. The phase was calculated with the Hilbert transform, then unwrapped and detrended to look for phase slip rates in a 1.0 ms wide stepping window with a step size of 0.06 ms. The spatiotemporal plots of the PSRs were made by using a montage layout of 256 equidistant electrode positions. The spatiotemporal profiles of EEG and PSRs during the stimulus and the first second of the post-stimulus period were examined in detail to study the visual evoked potentials and different stages of visual object recognition in the visual, language, and memory areas. It was found that the activity areas of PSRs were different as compared with EEG activity areas during the stimulus and post-stimulus periods. Different stages of the insight moments during the covert object naming tasks were examined from PSRs and it was found to be about 512 ± 21 ms for the ‘Eureka’ moment. Overall, these results indicate that information about the cortical phase transitions can be derived from the measured EEG data and can be used in a complementary fashion to study the cognitive behavior of the brain.

【 授权许可】

Unknown   
Copyright © 2023 Ramon, Graichen, Gargiulo, Zanow, Knösche and Haueisen.