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Simultaneous EEG Monitoring During Transcranial Direct Current Stimulation
Published on: June 17, 2013
Bilateral dorsolateral prefrontal cortex modulation for tinnitus by transcranial direct current stimulation: a
Sven Vanneste1, Mark Plazier, Jan Ost
1Brai2n, TRI, Department of Neurosurgery, University Hospital Antwerp, Wilrijkstraat 10, 2650, Edegem, Belgium. sven.vanneste@ua.ac.be
Experimental Brain Research
|February 27, 2010
Summary
Transcranial direct current stimulation (tDCS) may help some tinnitus patients. Applying tDCS with the right anode and left cathode to the prefrontal cortex reduced tinnitus intensity and distress in nearly 30% of participants.
Area of Science:
- Neuroscience
- Otolaryngology
- Neuromodulation
Background:
- Tinnitus is an auditory phantom percept with complex pathophysiology.
- Transcranial direct current stimulation (tDCS) shows potential for treating neurological conditions.
- The prefrontal cortex integrates sensory and emotional aspects of tinnitus.
Purpose of the Study:
- To investigate the efficacy of prefrontal cortex tDCS in reducing tinnitus perception.
- To explore the effects of different tDCS electrode placements on tinnitus.
- To identify patient characteristics that predict response to tDCS.
Main Methods:
- An open-label study involving 478 tinnitus patients.
- Bilateral tDCS applied to the dorsolateral prefrontal cortex for 20 minutes.
- Two stimulation configurations: anode right/cathode left and anode left/cathode right.
- Assessment using visual analogue scales for tinnitus intensity and distress.
Main Results:
- tDCS with right anode/left cathode configuration showed efficacy in 29.9% of patients.
- Responders experienced significant reductions in both tinnitus intensity and distress.
- Tinnitus laterality and type influenced distress reduction, but not intensity reduction.
- No significant effect was observed with the left anode/right cathode configuration.
Conclusions:
- The prefrontal cortex plays a role in tinnitus pathophysiology.
- Specific tDCS protocols targeting the prefrontal cortex may offer a therapeutic option for tinnitus.
- Further research is needed to optimize tDCS parameters and patient selection.
