کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5627597 1579720 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
After-effects of transcranial alternating current stimulation on evoked delta and theta power
ترجمه فارسی عنوان
پس از اثر تحریک جریان متناوب ترانس مغناطیسی در قدرت دلتا و تتا تحریک شده
کلمات کلیدی
الکتروانسفالوگرام، فعالیت مرتبط با رویداد، نوسانات، تحریک جریان متناوب ترانس کرانیال،
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی عصب شناسی
چکیده انگلیسی


- This study investigated tACS after-effects in evoked frontal oscillatory delta-theta activity.
- Results showed a significant decrease after delta-tACS slightly below stimulation frequency.
- The tACS induced effects may be explained by spike-timing dependent plasticity.

ObjectivePhase synchronization is suggested to be among the mechanisms that can explain the effects of transcranial alternating current stimulation (tACS). However, little is known about the effects of tACS on event-related oscillatory activity. Therefore the objective was to investigate frequency-related effects of frontal tACS on event-related oscillatory power.MethodsIn a double blind randomized controlled cross-over design, twenty-four participants received 12 min of delta (2.5 Hz), theta tACS (5 Hz) and sham tACS at an intensity of 1 mA peak-to-peak. Event-related delta- and theta-related oscillatory activity was recorded to reward- and punishment-related feedback signals.ResultsDelta tACS decreased feedback-related oscillatory power in the 1.5 and 3.5 Hz frequency range. This effect was driven by power changes below the tACS frequency stimulation.ConclusionExogenous field potentials can attenuate event-related oscillatory activity in a rhythm slightly below the stimulation frequency. Our findings suggest an interaction between tACS and event-related rhythmic activity that extends beyond phase synchronization.SignificanceThese findings add novel insights into the mechanisms of tACS after-effects.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Clinical Neurophysiology - Volume 128, Issue 11, November 2017, Pages 2227-2232
نویسندگان
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