Clinical assessments at different time points were performed by experienced neurologists. Baseline assessments were conducted 1 week before surgery. Postoperative follow-up assessments were conducted at 1, 3, 6, and 12 months after surgery. Clinical assessments included MMSE and the cognitive subscale of the Alzheimer’s Disease Assessment Scale (ADAS-Cog). It should be noted that because stimulation was performed 1 month after surgery, assessment at 1 month after surgery was performed at 3–5 days after stimulation.
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