P 59. Real-time prefrontal beta phase estimation during emotional interference inhibition. Issue 8 (August 2021)
- Record Type:
- Journal Article
- Title:
- P 59. Real-time prefrontal beta phase estimation during emotional interference inhibition. Issue 8 (August 2021)
- Main Title:
- P 59. Real-time prefrontal beta phase estimation during emotional interference inhibition
- Authors:
- Müller-Dahlhaus, F.
Zrenner, C.
Janzarik, G.
Metsomaa, J.
Ziemann, U.
Lieb, K.
Tüscher, O. - Abstract:
- Abstract : Previous studies suggest a common brain network including the right inferior frontal gyrus and pre-supplementary motor area integral to various types of emotional interference inhibition, i.e. suppression of task-irrelevant stimuli to pursue goal-directed behavior in the context of emotional distraction. This network reacts differently to emotional interference in individual subjects and exhibits a specific spectral signature in the beta-band. Here we analyze 64 channel surface EEG data during emotional interference inhibition operationalized by a Flanker task with preceding emotionally salient stimuli to determine "true phase" estimates and perform real-time (predictive) phase estimation of task-related beta-band oscillations. EEG data was spectrally analyzed, signal-to-noise ratios (SNRs) of periodic components of the power spectra calculated, and non-causal phase estimations (i.e. using data extending both directions around the time point of interest) performed to yield "true phase" estimates of task-related beta oscillations after Flanker signal presentation. Causal phase estimation of task-related EEG beta oscillations was achieved using an autoregressive forward prediction algorithm on data preceding the time point of interest only. Results show that real-time (i.e. causal) phase estimation of beta oscillations in the emotional Flanker task is feasible with satisfactory circular deviations of "true phase" estimates, but needs individual optimization of phaseAbstract : Previous studies suggest a common brain network including the right inferior frontal gyrus and pre-supplementary motor area integral to various types of emotional interference inhibition, i.e. suppression of task-irrelevant stimuli to pursue goal-directed behavior in the context of emotional distraction. This network reacts differently to emotional interference in individual subjects and exhibits a specific spectral signature in the beta-band. Here we analyze 64 channel surface EEG data during emotional interference inhibition operationalized by a Flanker task with preceding emotionally salient stimuli to determine "true phase" estimates and perform real-time (predictive) phase estimation of task-related beta-band oscillations. EEG data was spectrally analyzed, signal-to-noise ratios (SNRs) of periodic components of the power spectra calculated, and non-causal phase estimations (i.e. using data extending both directions around the time point of interest) performed to yield "true phase" estimates of task-related beta oscillations after Flanker signal presentation. Causal phase estimation of task-related EEG beta oscillations was achieved using an autoregressive forward prediction algorithm on data preceding the time point of interest only. Results show that real-time (i.e. causal) phase estimation of beta oscillations in the emotional Flanker task is feasible with satisfactory circular deviations of "true phase" estimates, but needs individual optimization of phase estimation parameters (i.e. window size [samples], FIR filter order, number of samples removed at data window edge, order of the autoregressive model). Findings have implications for the design of real-time EEG-triggered brain oscillation-synchronized TMS experiments to causally study the role of task-related beta-band activity for emotional interference inhibition. This study was supported by the Boehringer Ingelheim Foundation." … (more)
- Is Part Of:
- Clinical neurophysiology. Volume 132:Issue 8(2021)
- Journal:
- Clinical neurophysiology
- Issue:
- Volume 132:Issue 8(2021)
- Issue Display:
- Volume 132, Issue 8 (2021)
- Year:
- 2021
- Volume:
- 132
- Issue:
- 8
- Issue Sort Value:
- 2021-0132-0008-0000
- Page Start:
- e28
- Page End:
- Publication Date:
- 2021-08
- Subjects:
- Neurophysiology -- Periodicals
Electroencephalography -- Periodicals
Electromyography -- Periodicals
Neurology -- Periodicals
612.8 - Journal URLs:
- http://www.sciencedirect.com/science/journal/13882457 ↗
http://www.elsevier.com/journals ↗ - DOI:
- 10.1016/j.clinph.2021.02.375 ↗
- Languages:
- English
- ISSNs:
- 1388-2457
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 3286.310645
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 17539.xml