Effects of attention on inhibitory and facilitatory phenomena elicited by paired-pulse transcranial magnetic stimulation in healthy subjects.

Experimental Brain Research
Antonella ConteA Berardelli

Abstract

We investigated whether human attentional processes influence the activity of intracortical inhibitory and excitatory circuits--short-interval intracortical inhibition (SICI), long-interval intracortical inhibition (LICI), and the intracortical facilitation (ICF)--elicited by paired-pulse transcranial magnetic stimulation (TMS) in healthy subjects. In eight healthy subjects we tested SICI, LICI and ICF under different attention-demanding conditions: "relaxed", "target hand" and "non-target hand". To compare the effects of attentional levels on SICI, LICI and ICF with those produced on the MEPs elicited by repetitive TMS (rTMS), in the same subjects we also delivered supra-threshold 5-Hz rTMS under the same three experimental conditions. To disclose whether attentional processes act selectively on circuits engaged by TMS delivered at 5 Hz frequency and at an interstimulus interval (ISI) of 200 ms, we also investigated the effects of different attention levels on paired-pulse TMS delivered at the 200 ms ISI and on the MEP size during 1-Hz rTMS. Attentional levels had no influence on SICI, ICF and LICI activated by paired-pulse TMS, but increased the MEP facilitation elicited by 5-Hz rTMS. Varying the attention level left the find...Continue Reading

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Citations

Jun 14, 2013·Journal of Neuroengineering and Rehabilitation·Rebecca K AndrewsLucinda S Chipchase
Jul 29, 2011·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Hoau-Yan WangM Felice Ghilardi
Jul 19, 2013·Neural Plasticity·Alessio FaralliDaniela Carulli
May 31, 2011·Archives of Physical Medicine and Rehabilitation·Lucy S ChipchasePaul W Hodges
Jul 1, 2008·Brain Stimulation·Ulf ZiemannJohn C Rothwell
Jun 20, 2014·The European Journal of Neuroscience·Diane RugeJohn C Rothwell
Mar 31, 2016·Neuroscience and Biobehavioral Reviews·D C W KloosterP Boon
Jul 23, 2015·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Matt P Malcolm, Roger J Paxton
May 23, 2015·Somatosensory & Motor Research·Naoshin YoshidaKenichi Sugawara
Aug 5, 2010·NeuroImage·Florinda FerreriPaolo Maria Rossini
Jan 27, 2017·Journal of Neurophysiology·Benjamin W X Chong, Cathy M Stinear
Dec 26, 2018·Brain Topography·Robert MarkewitzMartin Schecklmann

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