Demonstration of short-term plasticity in the dorsolateral prefrontal cortex with theta burst stimulation: A TMS-EEG study

Sung Wook Chung, Benjamin P. Lewis, Nigel C. Rogasch, Takashi Saeki, Richard H. Thomson, Kate E. Hoy, Neil W. Bailey, Paul B. Fitzgerald

Research output: Contribution to journalArticleResearchpeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)1117-1126
Number of pages10
JournalClinical Neurophysiology
Volume128
Issue number7
DOIs
Publication statusPublished - 1 Jul 2017

Keywords

  • Cortical inhibition
  • Cortical reactivity
  • Theta burst stimulation (TBS)
  • TMS-EEG
  • TMS-evoked oscillations
  • TMS-evoked potential (TEP)

Cite this

@article{6d3a2498a31e4833aedf7e9ed49511f3,
title = "Demonstration of short-term plasticity in the dorsolateral prefrontal cortex with theta burst stimulation: A TMS-EEG study",
abstract = "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.",
keywords = "Cortical inhibition, Cortical reactivity, Theta burst stimulation (TBS), TMS-EEG, TMS-evoked oscillations, TMS-evoked potential (TEP)",
author = "Chung, {Sung Wook} and Lewis, {Benjamin P.} and Rogasch, {Nigel C.} and Takashi Saeki and Thomson, {Richard H.} and Hoy, {Kate E.} and Bailey, {Neil W.} and Fitzgerald, {Paul B.}",
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doi = "10.1016/j.clinph.2017.04.005",
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Demonstration of short-term plasticity in the dorsolateral prefrontal cortex with theta burst stimulation : A TMS-EEG study. / Chung, Sung Wook; Lewis, Benjamin P.; Rogasch, Nigel C.; Saeki, Takashi; Thomson, Richard H.; Hoy, Kate E.; Bailey, Neil W.; Fitzgerald, Paul B.

In: Clinical Neurophysiology, Vol. 128, No. 7, 01.07.2017, p. 1117-1126.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Demonstration of short-term plasticity in the dorsolateral prefrontal cortex with theta burst stimulation

T2 - A TMS-EEG study

AU - Chung, Sung Wook

AU - Lewis, Benjamin P.

AU - Rogasch, Nigel C.

AU - Saeki, Takashi

AU - Thomson, Richard H.

AU - Hoy, Kate E.

AU - Bailey, Neil W.

AU - Fitzgerald, Paul B.

PY - 2017/7/1

Y1 - 2017/7/1

N2 - 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.

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.

KW - Cortical inhibition

KW - Cortical reactivity

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KW - TMS-EEG

KW - TMS-evoked oscillations

KW - TMS-evoked potential (TEP)

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DO - 10.1016/j.clinph.2017.04.005

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SP - 1117

EP - 1126

JO - Clinical Neurophysiology

JF - Clinical Neurophysiology

SN - 1388-2457

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ER -