RT Journal Article
SR Electronic
T1 Demonstration of short-term plasticity in the dorsolateral prefrontal cortex with theta burst stimulation: A TMS-EEG study
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 101097
DO 10.1101/101097
A1 Sung Wook Chung
A1 Benjamin P. Lewis
A1 Nigel C. Rogasch
A1 Takashi Saeki
A1 Richard H. Thomson
A1 Kate E. Hoy
A1 Neil W. Bailey
A1 Paul B. Fitzgerald
YR 2017
UL http://biorxiv.org/content/early/2017/01/17/101097.abstract
AB Objectives To examine the effects of intermittent TBS (iTBS) and continuous TBS (cTBS) on cortical reactivity in the dorsolateral prefrontal cortex.Methods 10 healthy participants were stimulated with either iTBS, cTBS or sham at F3 electrode. Single- and paired-pulse TMS and concurrent electroencephalography (EEG) were used to assess change in cortical reactivity and long-interval intracortical inhibition (LICI) via TMS-evoked potentials (TEPs) and TMS-evoked oscillations.Results Significant increases in N120 amplitudes (p < 0.01) were observed following iTBS over prefrontal cortex. Changes in TMS-evoked theta oscillations and LICI of theta oscillations were also observed following iTBS (increase) and cTBS (decrease). Change in LICI of theta oscillations correlated with change in N120 amplitude following TBS (r = −0.670, p = 0.001).Conclusions This study provides preliminary evidence that TBS produces direct changes in cortical reactivity in the prefrontal cortex. Combining TBS with TMS-EEG may be a useful approach to optimise stimulation paradigms prior to the conduct of clinical trials.Significance TBS is able to modulate cortical reactivity and cortical inhibition in the prefrontal cortex.HighlightsEffects of iTBS and cTBS were studied in the DLPFC using TMS-EEGiTBS increased N120 amplitude, theta power and LICI of thetacTBS decreased theta power alone