PERFORM Publications

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Title		Authors	PubMed ID
1	Hemodynamic correlates of fluctuations in neuronal excitability: A simultaneous Paired Associative Stimulation (PAS) and functional near infra-red spectroscopy (fNIRS) study	Cai Z; Pellegrino G; Spilkin A; Delaire E; Uji M; Abdallah C; Lina JM; Fecteau S; Grova C;	40567300 PERFORM
2	Effect of Microstructure on Oxidation Resistance and TGO Formation in FeCoNiCrAl HEA Coatings Deposited by Low-Temperature HVAF Spraying	Shahbazi H; Lima RS; Stoyanov P; Moreau C;	40271745 ENCS
3	EEG complexity during mind wandering: A multiscale entropy investigation	Cnudde K; Kim G; Murch WS; Handy TC; Protzner AB; Kam JWY;	36621593 CONCORDIA
4	Hierarchical Bayesian modeling of the relationship between task-related hemodynamic responses and cortical excitability	Cai Z; Pellegrino G; Lina JM; Benali H; Grova C;	36250709 PERFORM
5	Entropy-Based Variational Scheme with Component Splitting for the Efficient Learning of Gamma Mixtures	Bourouis S; Pawar Y; Bouguila N;	35009726 ENCS
6	Evaluation of a personalized functional near infra-red optical tomography workflow using maximum entropy on the mean	Cai Z; Uji M; Aydin Ü; Pellegrino G; Spilkin A; Delaire É; Abdallah C; Lina JM; Grova C;	34342073 PERFORM
7	Fast oscillations >40 Hz localize the epileptogenic zone: An electrical source imaging study using high-density electroencephalography.	Avigdor T, Abdallah C, von Ellenrieder N, Hedrich T, Rubino A, Lo Russo G, Bernhardt B, Nobili L, Grova C, Frauscher B	33450578 PERFORM
8	Randomness, Informational Entropy, and Volatility Interdependencies among the Major World Markets: The Role of the COVID-19 Pandemic	Lahmiri S; Bekiros S;	33286604 JMSB
9	Renyi entropy and mutual information measurement of market expectations and investor fear during the COVID-19 pandemic	Lahmiri S; Bekiros S;	32834621 JMSB
10	The impact of COVID-19 pandemic upon stability and sequential irregularity of equity and cryptocurrency markets	Lahmiri S; Bekiros S;	32501379 JMSB
11	MEG-EEG Information Fusion and Electromagnetic Source Imaging: From Theory to Clinical Application in Epilepsy.	Chowdhury RA, Zerouali Y, Hedrich T, Heers M, Kobayashi E, Lina JM, Grova C	26016950 PERFORM
12	Reproducibility of EEG-MEG fusion source analysis of interictal spikes: Relevance in presurgical evaluation of epilepsy.	Chowdhury RA, Pellegrino G, Aydin Ü, Lina JM, Dubeau F, Kobayashi E, Grova C	29164737 PERFORM

Title:	Fast oscillations >40 Hz localize the epileptogenic zone: An electrical source imaging study using high-density electroencephalography.
Authors:	Avigdor T, Abdallah C, von Ellenrieder N, Hedrich T, Rubino A, Lo Russo G, Bernhardt B, Nobili L, Grova C, Frauscher B
Link:	https://www.ncbi.nlm.nih.gov/pubmed/33450578
DOI:	10.1016/j.clinph.2020.11.031
Publication:	Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology
Keywords:	Electrical source imaging; Epilepsy; High-density electroencephalography; Maximum entropy of the mean; Non-invasive localization;
PMID:	33450578	Category:	Clin Neurophysiol	Date Added:	2021-01-16
Dept Affiliation:	PERFORM 1 Analytical Neurophysiology Lab, Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Multimodal Functional Imaging Lab, Biomedical Engineering Department, McGill University, Canada. 2 Multimodal Functional Imaging Lab, Biomedical Engineering Department, McGill University, Canada. 3 Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada. 4 Claudio Munari Epilepsy Center, Niguarda Hospital, Milan, Italy. 5 Department of Neuroscience (DINOGMI), University of Genoa, Italy; IRCCS, Child Neuropsychiatry Unit, Instituto Giannina Gaslini, Genoa, Italy. 6 Multimodal Functional Imaging Lab, Biomedical Engineering Department, McGill University, Canada; Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Multimodal Functional Imaging Lab, PERFORM Centre, Department of Physics, Concordia University, Montreal, QC, Canada. 7 Analytical Neurophysiology Lab, Montreal Neurological Institute and Hospital, McGill University, Montreal, Quebec, Canada; Department of Medicine, Queen's University, Kingston, ON, Canada. Electronic address: birgit.frauscher@mcgill.ca.

Description:

Fast oscillations >40 Hz localize the epileptogenic zone: An electrical source imaging study using high-density electroencephalography.

Clin Neurophysiol. 2020 Dec 22; 132(2):568-580

Authors: Avigdor T, Abdallah C, von Ellenrieder N, Hedrich T, Rubino A, Lo Russo G, Bernhardt B, Nobili L, Grova C, Frauscher B

Abstract

OBJECTIVE: Fast Oscillations (FO) >40 Hz are a promising biomarker of the epileptogenic zone (EZ). Evidence using scalp electroencephalography (EEG) remains scarce. We assessed if electrical source imaging of FO using 256-channel high-density EEG (HD-EEG) is useful for EZ identification.

METHODS: We analyzed HD-EEG recordings of 10 focal drug-resistant epilepsy patients with seizure-free postsurgical outcome. We marked FO candidate events at the time of epileptic spikes and verified them by screening for an isolated peak in the time-frequency plot. We performed electrical source imaging of spikes and FO within the Maximum Entropy of the Mean framework. Source localization maps were validated against the surgical cavity.

RESULTS: We identified FO in five out of 10 patients who had a superficial or intermediate deep generator. The maximum of the FO maps was localized inside the cavity in all patients (100%). Analysis with a reduced electrode coverage using the 10-10 and 10-20 system showed a decreased localization accuracy of 60% and 40% respectively.

CONCLUSIONS: FO recorded with HD-EEG localize the EZ. HD-EEG is better suited to detect and localize FO than conventional EEG approaches.

SIGNIFICANCE: This study acts as proof-of-concept that FO localization using 256-channel HD-EEG is a viable marker of the EZ.

PMID: 33450578 [PubMed - as supplied by publisher]

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