Clinical Effect and Mechanism Study of Five Elements Music Therapy(FEMT) on Depression Disorder

Reduction rate = (Baseline HAMD-17 score - Week 4 HAMD-17 score) / Baseline HAMD-17 score. A HAMD-17 response rate ≥50% is defined as an effective treatment

HAMA scale is used to assess the severity of anxiety symptoms in patients with neurotic disorders and other conditions. Previous studies have reported good reliability and validity for this scale. According to the evaluation criteria provided by the Chinese Psychiatric Rating Scale Cooperative Group:

• A total score above 29 indicates severe anxiety;
• Above 21 indicates definite marked anxiety;
• Above 14 indicates definite anxiety;
• Above 7 suggests possible anxiety;
• Below 7 signifies no anxiety symptoms. Previous studies have commonly used 14 as the cut-off score, with higher total scores indicating more severe anxiety symptoms.

This scale is used to assess participants' cognitive function. It offers advantages in clinical applications including concise administration, user-friendly operation, and sensitive/responsive results. Patients experiencing depressive episodes demonstrate high compliance with completion. The RBANS includes five domain scores:

• Immediate Memory: Reflects the participant's ability to retain information immediately after presentation;

• Visuospatial/Constructional: Reflects the participant's ability to perceive spatial relationships and accurately reproduce drawings;

• Language: Reflects the participant's verbal fluency and naming abilities; ④ Attention: Reflects the participant's working memory capacity and ability to access short-term memory stores through visual and verbal modalities; ⑤ Delayed Memory: Reflects the participant's anterograde memory capacity.

Among comparable scales, it provides the most comprehensive item coverage-assessing both common adverse symptoms/signs and multiple laboratory findings. The Treatment Emergent Symptom Scale (TESS) requires clinicians to evaluate each symptom across three dimensions: Severity, Relationship to Intervention, and Action Taken.

Severity is rated on a 0-4 scale:

0 = Absence of the symptom;

• = Occasional presence of the symptom;
• = Mild severity, no impairment to routine functioning;
• = Moderate severity, producing some impairment to routine functioning;
• = Severe, causing significant impairment or disability to routine functioning.

ERP data acquisition in the laboratory was performed using the Curry system with an internationally standard 64-channel electrode cap. The right mastoid (M2) served as the reference electrode. Electrodes were attached above and below the left orbit to record vertical electro-oculogram (VEOG), and electrodes were placed at the outer canthi of both eyes to record horizontal electro-oculogram (HEOG). ERP data acquisition commenced once all electrode impedances were reduced below 5 kΩ.

For ERP data analysis, the recorded signals were band-pass filtered between 0.1 Hz and 30 Hz and continuously sampled at 500 Hz. The data were segmented into epochs of 1700 ms duration, including a 200-ms pre-stimulus baseline period and a 1500-ms post-stimulus period. The peak amplitudes of ERP components were calculated separately for each experimental group.

Participant Preparation: Adjust the chair height and chin rest so that the participant's horizontal line of sight aligns with the center of the screen or the center of the upper half of the screen. Adjust the orientation of the eye tracker using its mount to ensure the eye being tracked is centered in the image on the operator's monitor.

Calibration: Perform calibration using the eye tracker to ensure the participant's eye is within its field of view. Ensure accurate identification of the eye and corneal reflection points through automatic threshold adjustment or manual adjustment. Instruct the participant to fixate on calibration points displayed on the screen to begin the calibration process.

Data Recording: Once calibration is successful, begin presenting the stimulus materials and recording the data.

Data Saving: Upon completion of the experiment, the data will be automatically saved to the designated folder.

Participant Preparation: Ensure the participant is seated comfortably with their arm extended level with the heart, wrist straight, palm facing upwards. Place a fabric cushion under the wrist joint (dorsal side).

Device Connection: A Traditional Chinese Medicine (TCM) practitioner determines the Guan pulse position. Connect the sensor to this location.

Data Recording: The operator uses the software to record the participant's pulse pattern in a resting state. A typical recording duration is 1 minute.

Data Saving: Upon completion of the experiment, the data will be automatically saved to the designated folder.