Exploration of the Effectiveness of Vibrational Intervention in Improving Insomnia Symptoms

Inclusion Criteria: * Aged 18 to 65 years, regardless of gender; * Diagnosed with chronic insomnia disorder according to DSM-5 criteria, with a primary complaint of difficulty falling asleep (sleep onset latency \> 30 minutes), occurring ≥3 times per week, lasting for more than 3 months but less than 3 years; * Able to independently operate a smartphone, and capable of completing self-reported assessments and applying the self-administered intervention after instruction. Exclusion Criteria: * Presence of sleep disorders such as sleep apnea syndrome or restless legs syndrome; * Epworth Sleepiness Scale (ESS) score \> 10; * Use of any sleep-related medication within the past month; * Patient Health Questionnaire-9 (PHQ-9) score \> 15 or Generalized Anxiety Disorder-7 (GAD-7) score \> 10; * Currently participating in any form of cognitive behavioral therapy or neuromodulation intervention study; * Working night shifts or rotating shifts; * Clinically diagnosed neurological disorders such as epilepsy, stroke, dementia, or Parkinson's disease, or psychiatric disorders such as bipolar disorder, obsessive-compulsive disorder, phobias, or panic disorder; * Substance abuse (including alcohol or drugs), defined as more than 14 drinks/week for males or 12 drinks/week for females.