Electro-acupuncture for SCD With Depression

Inclusion Criteria: * Age 60-80 years, right-handed * Meets the diagnostic criteria for Subjective Cognitive Decline (SCD) * Geriatric Depression Scale-15 (GDS-15) score ≥5 * Clear consciousness, cooperative during examination, with adequate auditory comprehension * Patient and family agree to complete assessments and have provided informed consent with signed documentation Exclusion Criteria: * Received other anti-dementia or antidepressant therapy within the past 2 weeks, or currently participating in other clinical trials * Experienced acute cerebral infarction, cerebral hemorrhage, or transient ischemic symptoms within the past 6 months, or presence of localized old encephalomalacia foci * History of positive neuropsychiatric disorders and major trauma, including dementia, depression, epilepsy, etc. * Suffering from other severe comorbidities (aphasia, diabetic ketoacidosis, hyperosmolar hyperglycemic state, diabetic lower limb vascular disease, moderate to severe edema of lower limbs, lower limb venous thrombosis, arteriosclerosis obliterans of lower limbs, peripheral neuropathy, spinal cord lesions, traumatic brain injury, intracranial infection, brain tumors, etc.) or secondary diseases (e.g., heart, liver, or renal failure, etc.) * Infection at the acupuncture site and/or intolerance to acupuncture therapy * Contraindications to MRI examination (claustrophobia, surgically implanted metal devices, cochlear implants, implanted pulse generators, etc.)