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The Combination of Transcranial Alternating Current Stimulation and Electroencephalogram
Published on: October 10, 2025
Transcranial direct current stimulation based on quantitative electroencephalogram combining positive psychotherapy
Zahra Khayyer1, Leonard Ngaosuvan2, Sverker Sikström3
1Educational Sciences & Psychology Department, University of Isfahan, Isfahan, Iran.
Combining transcranial direct current stimulation (tDCS) with positive psychology therapy significantly improves depression, hope, and optimism. This combined treatment offers a promising approach for enhancing mental well-being in depressed individuals.
Area of Science:
- Neuroscience
- Psychiatry
- Psychology
Background:
- Depression is associated with reduced left frontal cortex activity.
- Transcranial direct current stimulation (tDCS) is a noninvasive neuromodulation technique that can modulate frontal cortex activity.
- Positive psychology therapy focuses on enhancing well-being and positive traits.
Purpose of the Study:
- To compare the efficacy of tDCS therapy, positive psychotherapy, and a combined treatment for improving the quality of life in patients with clinical depression.
- To evaluate the impact of these interventions on depressive mood, hope, and optimism.
Main Methods:
- A study involving subjects with clinical depression was conducted.
- Three conditions were compared: tDCS therapy alone, positive psychotherapy alone, and combined tDCS and positive psychotherapy.
- Assessments using the Hamilton Depression Rating Scale, Adult State Hope Scale, and Optimism/Pessimism Scale were performed at baseline, 2-week, 4-week, and 3-month follow-up.
Main Results:
- Participants in the combined treatment group demonstrated a greater reduction in depressed mood compared to the other groups.
- The combined treatment group also showed significant improvements in hope and optimism.
- These positive effects were observed at the 4-week assessment and sustained through the 3-month follow-up.
Conclusions:
- The combination of tDCS and positive psychology therapy appears to be more effective than either treatment alone for improving depression, hope, and optimism.
- The findings suggest an additive or synergistic relationship between tDCS and positive psychology in treating depression.
- This combined approach holds potential for enhancing the quality of life in individuals with clinical depression.
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