SLPRCTJournal of neuroengineering and rehabilitation2025

Enhanced episodic memory and LTP-like plasticity in subjective cognitive decline following 10-Hz repetitive transcranial magnetic stimulation.

Tianjiao Zhang, Qian Lu, Jie Song and 8 others

PMID 41013456

WHAT IT FOUND

Overall episodic memory did not differ between active and sham rTMS groups, but one delayed-memory subtest improved only in the active group.

Hand-muscle responses to a plasticity test also increased only within the active group.

Key findings

01The overall group difference on episodic memory was not significant, but a time-by-group interaction was found for AVLT-N5.

02AVLT-N5 rose from 3.90 to 5.86 in the rTMS group and changed from 4.86 to 4.90 in the sham group.

03After intervention, the rTMS group showed increased MEP amplitudes at T5 and T10, but the group-by-time interaction was not significant.

STILL TO COME

How it was doneWhat they foundWhat it means for SLPs

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What it does not show

The sample was small, and the paper states 24 participants were recruited while Table 1 and F(1,40) analyses suggest a larger analysed sample; the analysed N is not clearly stated. The study used a predominantly female cohort and single-site recruitment. This limits generalisability. No neuroimaging was done, so the link between motor-cortex plasticity and memory circuits is indirect. Anxiety, depression and stress were not assessed, although they can affect cognition. The primary AVLT-H measure did not show a significant overall group difference; the positive result was a time-by-group interaction for one subtest. The memory-plasticity correlation did not hold after adjusting for baseline memory, so the mechanism is preliminary. Randomisation allocation concealment and blinding procedures are not described beyond the sham procedure.

Declared interests

The supplied text names funders: National Natural Science Foundation of China, the Competitive Project of Jiangsu Province's Key Research and Development Program, and the Jiangsu Province Hospital clinical diagnosis and treatment of technological innovation 'Open bidding for selecting the best candidates' project. It does not state author conflicts of interest or whether funders designed or wrote the study.

The easy way to misread this

Do not conclude that 10-Hz rTMS is an established cognitive treatment for subjective cognitive decline. The overall group difference on the primary memory measure was not significant, only one AVLT subtest showed a group-by-time interaction, and the plasticity association did not hold after baseline adjustment.

Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →