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Electrophysiological Changes in Patients with Post-stroke Aphasia: A Systematic Review
Sophie Arheix-Parras1,2,3, Bertrand Glize4,5,6, Dominique Guehl7,8
1ACTIVE team, Bordeaux Population Health, INSERM UMR 1219, university of Bordeaux, 33000, Bordeaux, France. sophie.arheix-parras@u-bordeaux.fr.
Brain Topography
|February 7, 2023
Summary
Event-related potentials (ERPs) and evoked magnetic fields (EMFs) show promise for tracking post-stroke aphasia recovery. These electrophysiological measures may better identify therapy effects than continuous brain activity.
Area of Science:
- Neuroscience
- Neurology
- Speech-Language Pathology
Background:
- Magnetoencephalography (MEG) and electroencephalography (EEG) are crucial for studying brain activity.
- Post-stroke aphasia recovery research often utilizes continuous or event-related temporal imaging.
Approach:
- Systematic review of longitudinal studies on post-stroke aphasia recovery using EEG or MEG.
- Searched PubMed and Scopus for English articles published from 1950 to May 31, 2022.
- Included 34 studies: 11 non-interventional and 23 clinical trials.
Key Points:
- Non-interventional studies linked persistent slow-wave activity to poor language recovery.
- Clinical trials indicated that behavioral improvements correlated with N400 component modulation.
- Event-related potentials/evoked magnetic fields may be more reliable than continuous EEG for identifying therapy effects.
Conclusions:
- Electrophysiology, particularly ERPs/EMFs, can effectively explore post-stroke language impairments.
- These methods may reveal treatment challenges and guide therapeutic strategies for aphasia.
- Further integration of electrophysiology in stroke recovery research is recommended.
