The lack of focused anticipation of verbal information in stutterers: a magnetoencephalographic study

NeuroImage
Peter WallaStefan Thurner

Abstract

The motivation of this work was to investigate stuttering--a disorder of speech motor control--in the light of preparatory neural activity of voluntary movements related to speech. To this end, brain activity was recorded with a whole cortex magnetoencephalograph (MEG) in developmental stutterers and nonstutterers while three different tasks of single-word reading were performed. Visually presented words had to be silently read immediately after word presentation (condition 1), spoken aloud immediately after word presentation (condition 2), or spoken aloud after a delay of 1.3 s as indicated by a second visual stimulus (condition 3). Condition 2 clearly showed marked neurophysiological differences between stutterers and nonstutterers. Only nonstutterers showed clear neural activity before speech onset, which is interpreted as being linked to visual word presentation and to reflect focused verbal anticipation. This prespeech activity might reflect the "Bereitschaftsfeld2" (BF2) that is the later component of the "Bereitschaftsfeld", a well-known preparatory activity described for many other voluntary movements. Our results strongly link the lack of such preparatory brain activity at the single-word level to the disability of flu...Continue Reading

References

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Citations

Jun 29, 2013·Clinical Linguistics & Phonetics·Michael P RobbGreg A O'Beirne
Oct 30, 2007·Journal of Fluency Disorders·Sarah Smits-Bandstra, Luc F De Nil
Apr 22, 2017·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·P BusanM Sommer
May 10, 2017·Physiological Reports·Ranit SenguptaSazzad M Nasir
Nov 11, 2010·Journal of Emergencies, Trauma, and Shock·S HunzikerS Marsch
Jun 13, 2015·Journal of Fluency Disorders·Eric S JacksonD H Whalen

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