Neurophysiological Biomarkers for Motor Recovery After Stroke
Author Information
Author(s): Lacerda Guilherme J. M., Silva Fernanda M. Q., Pacheco-Barrios Kevin, Battistella Linamara Rizzo, Fregni Felipe
Primary Institution: Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School
Hypothesis
A decreased EEG-TAR will be related to better functional improvement in stroke patients.
Conclusion
The study found that a lower baseline theta/alpha ratio (TAR) in the lesioned hemisphere is associated with better motor function recovery post-stroke.
Supporting Evidence
- A higher baseline TAR in the lesioned hemisphere was associated with poorer motor outcomes.
- An increase in TAR post-intervention was linked to better motor function improvements.
- Neurophysiological measures like TAR and TMS metrics can guide personalized rehabilitation strategies.
Takeaway
This study looked at how brain activity can help predict how well stroke patients will recover their ability to move their arms. It found that certain brain measurements can show if a patient is likely to get better.
Methodology
This longitudinal cohort study analyzed neurophysiological, clinical, and demographic data from 102 stroke patients, focusing on EEG and TMS metrics.
Potential Biases
The study did not report specific risks of bias.
Limitations
The relatively small sample size may have impacted the statistical power, and the study was conducted in a single center, which may affect the generalizability of the findings.
Participant Demographics
Mean age of 56 years, 57% male, mostly white, with 81% having ischemic strokes.
Statistical Information
P-Value
0.04
Confidence Interval
0.04–0.82
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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