Mindfulness Intervention for Emotional Distress: An EEG Study

Inclusion Criteria: * Adults aged 18-50 years Kessler Psychological Distress Scale (K10) score \> 21 No systematic mindfulness or progressive muscle relaxation practice in the past 6 months (frequency \< 1 time per week) Normal or corrected-to-normal vision Voluntary participation with signed informed consent Exclusion Criteria: * Prior diagnosis of schizophrenia, bipolar disorder, or other severe mental disorders by a psychiatrist Suicidal plan, self-injury, or need for emergency psychological crisis intervention in the past month Currently receiving systematic psychotherapy or participating in other psychological intervention programs Started psychiatric medication within the past 3 months or on an unstable medication dosage History of epilepsy, severe brain injury, or other neurological disorders that may affect EEG measurement Severe vision or hearing impairment or other conditions preventing completion of study procedures