Only EA-trained older adults show post-training declines in theta- and alpha-band EEG connectivity strength¶

Claim · All claims
Evidence · 1 study · causal r2 · q3
Currency · newest study 2023 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? In the EA group, mean phase-lag index decreased in the theta (4–7 Hz) and alpha (8–12 Hz) bands after training, while control-group connectivity did not vary with training. → Chen 2023

Evidence¶

Chen 2023¶

Chen, Y.-C., Chang, G.-C., Huang, W.-M. & Hwang, I.-S. (2023). Quick balance skill improvement after short-term training with error amplification feedback for older adults. npj Science of Learning. https://doi.org/10.1038/s41539-022-00151-w

q3 · i? · causal · r2

Hotelling's T-squared and post-hoc t tests of scalp EEG phase-lag index within the EA group (n = 18) across pre- and post-test stance trials; connectivity declined in theta and alpha bands. Effect sizes (ηp²) not quoted here; impact null.

"The results of Hotelling’s T-squared statistics revealed a significant difference in m-PLI in the EA group (Wilks ’ Λ = 0.594, p = 0.045) but not in the control group (Wilks ’ Λ = 0.873, p = 0.551). In the EA group, post hoc analysis further revealed that the m-PLIs of the theta (t17 = −2.861, p = 0.011) and beta ( t17 = −2.424, p = 0.027) bands were smaller in the post-test than in the pre-test."

Discussion¶

Related Claims¶

• Older adults trained with error-amplification visual feedback show greater postural-error reduction than those trained with real-error feedback on a stabilometer task — related
• EA-based training changes minimum-spanning-tree network topology in theta (larger diameter and average eccentricity) and alpha (smaller leaf fraction) bands only in the EA group — related
• HD-tDCS facilitated and enhanced training-induced increases in frontal task-related theta, alpha, beta, and gamma power — related
• EA training increases the mean frequency of postural fluctuations more than real-error feedback — related
• EA training shifts older adults' postural strategy away from the ankle strategy, reducing ankle–plate kinematic coupling — related