Retest reliability of individual alpha ERD topography assessed by human electroencephalography

Vázquez‐Marrufo, Manuel; Galvao-Carmona, Alejandro; Benítez-Lugo, María-Luisa; Ruiz-Peña, Juan Luís; Guerra, Monica; Ayuso, Guillermo Izquierdo

doi:10.1371/journal.pone.0187244

Cited by 13 publications

(22 citation statements)

References 31 publications

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“…In terms of the session factor, no differences were found for either modulation between measures. In previous test-retest studies, other components of the time and frequency domain (P3 and alpha-ERD) exhibited an increase in the amplitude for session 2 and were highly consistent in all experimental subjects [ 20 , 21 ]. The increment for the amplitude in these variables was interpreted as a result of the increase in synchrony (reaching an optimal performance for the neural network) because of the task repetition.…”

Section: Discussionmentioning

confidence: 61%

“…and alpha-ERD) exhibited an increase in the amplitude for session 2 and were highly consistent in all experimental subjects [20,21]. The increment for the amplitude in these variables was interpreted as a result of the increase in synchrony (reaching an optimal performance for the neural network) because of the task repetition.…”

Section: Plos Onementioning

confidence: 57%

“…Behavioral analyses showed that there was no significant difference between the sessions. In previous studies, some authors have reported a reliable score for reaction time in test-retest reliability analysis for oddball tasks [ 20 , 21 , 28 ]. Moreover, the lack of differences in accuracy variables (target and global) ensured that the reliability observed in the reaction time was not affected by a speed-accuracy tradeoff.…”

Section: Discussionmentioning

confidence: 99%

“…However, test-retest reliability studies are usually focused only on group comparisons (grand averages) and not on individual comparisons that are relevant for the potential application of these techniques in the clinical field. Previous studies in our lab have analyzed this issue in other EEG measures, such as P3 or alpha-TSE [20,21]. The results showed that the correlation for group comparisons was excellent for both parameters (P3 and alpha-desynchronization).…”

Section: Introductionmentioning

confidence: 87%

“…reliability analysis for oddball tasks [20,21,28]. Moreover, the lack of differences in accuracy variables (target and global) ensured that the reliability observed in the reaction time was not affected by a speed-accuracy tradeoff.…”

Section: Plos Onementioning

confidence: 99%

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Individual test-retest reliability of evoked and induced alpha activity in human EEG data

et al. 2020

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Diverse psychological mechanisms have been associated with modulations of different EEG frequencies. To the extent of our knowledge, there are few studies of the test-retest reliability of these modulations in the human brain. To assess evoked and induced alpha reliabilities related to cognitive processing, EEG data from twenty subjects were recorded in 58 derivations in two different sessions separated by 49.5 ± 48.9 (mean ± standard deviation) days. A visual oddball was selected as the cognitive task, and three main parameters were analyzed for evoked and induced alpha modulations (latency, amplitude and topography). Latency and amplitude for evoked and induced modulations showed stable behavior between the two sessions. The correlation between sessions for alpha evoked and induced topographies in the grand average (group level) was r = 0.923, p<0.001; r = 0.962, p<0.001, respectively. The within-subject correlation values for evoked modulation ranged from 0.472 to 0.974 (mean: 0.766), whereas induced activity showed a different range, 0.193 to 0.892 (mean: 0.655). Individual analysis of the test-retest reliability showed a higher heterogeneity in the induced modulation, probably due to the heterogeneous phases found in the second case. However, despite this heterogeneity in phase values for induced activity relative to the onset of the stimuli, an excellent correlation score was obtained for group topography, with values that were better than those of the grand average evoked topography. As a main conclusion, induced alpha activity can be observed as a stable and reproducible response in the cognitive processing of the human brain.

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Section: Discussionmentioning

confidence: 61%

Section: Plos Onementioning

confidence: 57%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 87%

Section: Plos Onementioning

confidence: 99%

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Individual test-retest reliability of evoked and induced alpha activity in human EEG data

et al. 2020

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Task switching challenge to reveal abnormal brain‐heart signatures in cognitively healthy individuals with abnormal CSF amyloid/tau

Arechavala

Liu

Rochart

et al. 2021

Alzheimer's & Dementia

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Background: Alpha oscillations during task switching reveals general attention (low alpha) and higher executive attentional control (high alpha). Alpha oscillations have been related to heart rate variability (HRV), both change in Alzheimer's disease (AD).We aim to explore if task switching challenge with quantitative electroencephalography (qEEG) can reveal abnormal alpha power and HRV in individuals with high risk of AD, and we predict HRV improves qEEG's detection of high AD risk. Method:We compared alpha power during task switching testing between two groups of cognitively healthy participants (52-91 years) based on different cerebrospinal fluid (CSF) amyloid/tau ratio: normal (CH-NAT, n=19) or pathological amyloid/tau ratio (CH-PAT, n=27). Participants were required to name the color or word of a colored word for each stimulus, with two sequential stimuli per trial. Alpha event-related desynchronization (ERD) was analyzed during low load, repeat trials (color-color or word-word) and high load, switch trials (color-word or word-color). HRV was assessed from 5minute ECG recording during rest or task, including: standard deviation of RR-intervals (SDNN), root mean squared of successive differences (RMSSD) in the time domain, as well as high (HF) and low frequency (LF) in the frequency domain. We trained a binary classifier to predict the CH-PATs using a 30 random split of training (80%) and testing (20%) data and two-layer, fully connected neural network after identifying significant qEEG and HRV features.Result: We found that low alpha power was less negative in CH-PATs than CH-NATs

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Task switching reveals abnormal brain-heart electrophysiological signatures in cognitively healthy individuals with abnormal CSF amyloid/tau, a pilot study

Arechavala

Rochart

Kloner

et al. 2021

International Journal of Psychophysiology

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Retest reliability of individual alpha ERD topography assessed by human electroencephalography

Cited by 13 publications

References 31 publications

Individual test-retest reliability of evoked and induced alpha activity in human EEG data

Individual test-retest reliability of evoked and induced alpha activity in human EEG data

Task switching challenge to reveal abnormal brain‐heart signatures in cognitively healthy individuals with abnormal CSF amyloid/tau

Task switching reveals abnormal brain-heart electrophysiological signatures in cognitively healthy individuals with abnormal CSF amyloid/tau, a pilot study

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