Facilitation of speech repetition accuracy by theta burst stimulation of the left posterior inferior frontal gyrus

Neuropsychologia
Julia RestleUlf Ziemann

Abstract

The posterior part of the inferior frontal gyrus (pIFG) in the left hemisphere is thought to form part of the putative human mirror neuron system and is assigned a key role in mapping sensory perception onto motor action. Accordingly, the pIFG is involved in motor imitation of the observed actions of others but it is not known to what extent speech repetition of auditory-presented sentences is also a function of the pIFG. Here we applied fMRI-guided facilitating intermittent theta burst transcranial magnetic stimulation (iTBS), or depressant continuous TBS (cTBS), or intermediate TBS (imTBS) over the left pIFG of healthy subjects and compared speech repetition accuracy of foreign Japanese sentences before and after TBS. We found that repetition accuracy improved after iTBS and, to a lesser extent, after imTBS, but remained unchanged after cTBS. In a control experiment, iTBS was applied over the left middle occipital gyrus (MOG), a region not involved in sensorimotor processing of auditory-presented speech. Repetition accuracy remained unchanged after iTBS of MOG. We argue that the stimulation type and stimulation site specific facilitating effect of iTBS over left pIFG on speech repetition accuracy indicates a causal role of th...Continue Reading

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Citations

Jan 15, 2014·Journal of Affective Disorders·Christian PlewniaAndreas Fallgatter
May 26, 2016·Ageing Research Reviews·Elisa TattiEmiliano Santarnecchi
Jun 28, 2016·Neuroscience and Biobehavioral Reviews·Ingo HertrichHermann Ackermann
Aug 16, 2016·Frontiers in Human Neuroscience·Pierre NicoloAdrian G Guggisberg
Jan 30, 2015·Einstein·Solange Satie OnoueAlda Christina Lopes de Carvalho Borges
Dec 10, 2019·Cerebral Cortex·Benjamin KowialiewskiSteve Majerus
Apr 20, 2017·Frontiers in Human Neuroscience·Marcelo L BerthierDiana López-Barroso
May 22, 2021·Frontiers in Aging Neuroscience·Marcelo L BerthierGuadalupe Dávila
Jul 10, 2021·Perspectives on Psychological Science : a Journal of the Association for Psychological Science·Cecilia Heyes, Caroline Catmur

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