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Effects of theta burst stimulation protocols on phosphene threshold.
- Source :
-
Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology [Clin Neurophysiol] 2006 Aug; Vol. 117 (8), pp. 1808-13. Date of Electronic Publication: 2006 Jun 21. - Publication Year :
- 2006
-
Abstract
- Objective: We investigated the effects on occipital cortex, of two newly developed methods of repetitive transcranial magnetic stimulation (rTMS): continuous and intermittent theta burst stimulation (cTBS and iTBS), that lead to long lasting changes in excitability when applied over primary motor cortex.<br />Methods: Phosphene threshold to a single TMS pulse was measured before and after application of either continuous or intermittent theta burst stimulation (cTBS/iTBS; 600 total pulses at 80% phosphene threshold).<br />Results: In our cohort, cTBS increased phosphene threshold by an average of 10%. In contrast, iTBS, which transiently increases motor cortex excitability, had no effect on phosphene threshold.<br />Conclusions: cTBS can be applied successfully to non-motor areas of cortex, but iTBS may need modification to produce maximal effects.<br />Significance: cTBS maybe a new useful tool in disorders characterized by an abnormal state of activity of the visual cortex.
Details
- Language :
- English
- ISSN :
- 1388-2457
- Volume :
- 117
- Issue :
- 8
- Database :
- MEDLINE
- Journal :
- Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology
- Publication Type :
- Academic Journal
- Accession number :
- 16797230
- Full Text :
- https://doi.org/10.1016/j.clinph.2006.03.019