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Master Thesis

Modifications électrophysiologiques dans le suivi longitudinal de patients aphasiques : une revue de la littérature

Abstract : Two principal types of measures can be recorded by magnetoencephalography and electroencephalography: continuous, mostly recorded during resting or sleep, or event-related potential/evoked magnetic field (ERP/EMF) measures, that involves a specific and repetitive task. ERPs/EMFs can be analyzed by waveforms, time-frequency, or topography analysis. This systematic review aimed to summarize longitudinal studies about the recovery of post-stroke aphasia studied by temporal imagery, both continuous and event-related. We searched MEDLINE via PubMed and Scopus 76 on March 26, 2020, for English articles published from 1950 to 2020. Eligible studies involved poststroke aphasia exploration by EEG or MEG during resting state or different tasks. We included reports of 38 studies: 11 were non-interventional studies following recovery (176 patients) and 27 were clinical trials with drugs (48 patients), specific rehabilitation methods (178 patients), or neuromodulation (122 patients). Non-interventional studies correlated spontaneous recovery with biomarkers, like the link between poor recovery and slow-wave activity. Clinical trials wanted to correlate behavioral improvements and electrophysiological measures: lots of studies focused on the N400 component as a good biomarker of therapy-induced effects. To conclude, the contribution of EEG and MEG measures is interesting for the following of spontaneous or therapy-induced effects recovery in post-stroke aphasia, but poorly exploited. The few number of high-resolution imagery studies and the lack of knowledge about topographical or time-frequency analysis are probably the main reasons why they are little used. As for, the identification of biomarkers of therapy induced effects, it seems more reliable with ERP/EMF than through continuous EEG.
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Submitted on : Monday, December 21, 2020 - 9:43:43 AM
Last modification on : Tuesday, March 16, 2021 - 8:56:46 AM


  • HAL Id : dumas-03084341, version 1




Sophie Arheix-Parras. Modifications électrophysiologiques dans le suivi longitudinal de patients aphasiques : une revue de la littérature. Sciences cognitives. 2020. ⟨dumas-03084341⟩



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