Localized Potentiation of Sleep Slow-Wave Activity Induced by Prefrontal Repetitive Transcranial Magnetic Stimulation in Patients with a Major Depressive Episode
| Autor: | Nobuhide Hirai, Motoaki Nakamura, Yoshio Hirayasu, Hideo Iwanari, Yoshihiro Noda, Takashi Saeki, Shunsuke Hayasaka |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Adult
Male Sleep Wake Disorders medicine.medical_specialty Repetitive transcranial magnetic stimulation Polysomnography medicine.medical_treatment Biophysics Sleep disturbance Prefrontal Cortex Pilot Projects Audiology Electroencephalography Brain mapping lcsh:RC321-571 Slow wave sleep Neuroplasticity medicine Major depression Humans Major depressive episode lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry Slow-wave sleep Analysis of Variance Brain Mapping Depressive Disorder Major Sleep disorder Fourier Analysis medicine.diagnostic_test Electromyography General Neuroscience Middle Aged medicine.disease Brain Waves Transcranial Magnetic Stimulation Transcranial magnetic stimulation Neurology (clinical) medicine.symptom Psychology Neuroscience |
| Zdroj: | Brain Stimulation, Vol 6, Iss 3, Pp 390-396 (2013) |
| ISSN: | 1935-861X |
| DOI: | 10.1016/j.brs.2012.08.004 |
| Popis: | Background The effects of repetitive transcranial magnetic stimulation (rTMS) on sleep structure in major depression are currently unknown. Objective To determine the effects of prefrontal rTMS on sleep electroencephalography (EEG) in major depression. Methods In this open-label pilot study, twelve male patients with relatively mild depression, who had been medication-resistant, underwent 10 daily rTMS sessions over the left dorsolateral prefrontal cortex (DLPFC). Polysomnographic (PSG) data were recorded over four nights: Adaptation, Baseline, Post-1 (after the fifth rTMS session), and Post-2 (after the tenth rTMS session). Discrete Fourier Transform (DFT) band power analyses were performed to quantify delta and sigma band activities during Stages II–IV, and determine time courses of these activities between Baseline and Post-1 (first five sessions) and between Post-1 and Post-2 (last five sessions). Results Post-hoc tests based on a three-way ANOVA model indicated significant delta power increase at F3 ( t 11 = −2.762, P = 0.018) during the first five sessions; however, sigma power was unchanged. No significant band power changes were observed during the second half. Stages II–IV (percent total sleep time) increased significantly during the first half ( t 12 = −2.43, P = 0.033). No other significant changes in sleep parameters or clinical correlations were observed. Conclusions The first five sessions of high frequency rTMS to the left DLPFC increase slow-wave activity (SWA) at F3, possibly reflecting locally enhanced synaptic plasticity induced by rTMS. This increased activity was not observed during the last half, possibly due to a homeostatic regulation mechanism intrinsic to SWA. |
| Databáze: | OpenAIRE |
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