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Acute and chronic effects of repeated 1 Hz rTMS on the temporal cortex

Title
Acute and chronic effects of repeated 1 Hz rTMS on the temporal cortex
Authors
Kim W.S.Lee M.Han J.M.Kim S.E.Kim H.-J.Kim B.S.Kim B.G.Lee H.W.
Ewha Authors
이향운김범산
SCOPUS Author ID
이향운scopus; 김범산scopus
Issue Date
2012
Journal Title
NeuroReport
ISSN
0959-4965JCR Link
Citation
vol. 23, no. 9, pp. 540 - 545
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Electroencephalography amplitude, phase synchronization, and directionality of phase coupling within and between hemispheres were compared for different frequency components in 27 healthy individuals before and after 5 days of daily 1 Hz repetitive transcranial magnetic stimulation (rTMS), and at 2 weeks after the last session. Instantaneous amplitudes of α (8-13 Hz) and β (13-30 Hz) frequency components were increased after daily rTMS, the effects of which were declining over time, suggesting an adapting response with repeated rTMS sessions. The phase synchronization of electroencephalography increased significantly in the α frequency, especially the upper-α band (11-13 Hz), in both the frontal and the temporal areas, predominantly in the ipsilateral hemisphere. Asymmetric directional interactions of the upper-α band were stronger from the stimulated area to the contralateral hemisphere. No significant differences were found at 2 weeks after rTMS in any of these values. Focal 1 Hz rTMS induces an enhancement in the ipsilateral dominant corticocortical interaction drastically by interhemispheric asymmetric coupling from the stimulated cortical area with an adapting response with repeated sessions. This kind of method can be valuable for possible clinical applications in various neuropsychiatric conditions to study the therapeutic mechanisms of 1 Hz rTMS. © 2012 Lippincott Williams & Wilkins, Inc.
DOI
10.1097/WNR.0b013e328354036f
Appears in Collections:
의학전문대학원 > 의학과 > Journal papers
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