University of Oulu

Johanna Piispala, Tuomo Starck, Eira Jansson-Verkasalo, Mika Kallio, Decreased occipital alpha oscillation in children who stutter during a visual Go/Nogo task, Clinical Neurophysiology, Volume 129, Issue 9, 2018, Pages 1971-1980, ISSN 1388-2457,

Decreased occipital alpha oscillation in children who stutter during a visual Go/Nogo task

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Author: Piispala, Johanna1,2; Starck, Tuomo1,2; Jansson-Verkasalo, Eira3;
Organizations: 1Department of Clinical Neurophysiology, Oulu University Hospital, Finland
2Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Finland
3Department of Psychology and Speech-Language Pathology, Speech-Language Pathology, University of Turku, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1.3 MB)
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Language: English
Published: Elsevier, 2018
Publish Date: 2019-11-29


Objective: Our goal was to discover attention- and inhibitory control-related differences in the main oscillations of the brain of children who stutter (CWS) compared to typically developed children (TDC).

Methods: We performed a time-frequency analysis using wavelets, fast Fourier transformation (FFT) and the Alpha/Theta power ratio of EEG data collected during a visual Go/Nogo task in 7–9 year old CWS and TDC, including also the time window between consecutive tasks.

Results: CWS showed significantly reduced occipital alpha power and Alpha/Theta ratio in the “resting” or preparatory period between visual stimuli especially in the Nogo condition.

Conclusions: The CWS demonstrate reduced inhibition of the visual cortex and information processing in the absence of visual stimuli, which may be related to problems in attentional gating.

Significance: Occipital alpha oscillation is elementary in the control and inhibition of visual attention and the lack of occipital alpha modulation indicate fundamental differences in the regulation of visual information processing in CWS. Our findings support the view of stuttering as part of a wide-ranging brain dysfunction most likely involving also attentional and inhibitory networks.

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Series: Clinical neurophysiology
ISSN: 1388-2457
ISSN-E: 1872-8952
ISSN-L: 1388-2457
Volume: 129
Issue: 9
Pages: 1971 - 1980
DOI: 10.1016/j.clinph.2018.06.022
Type of Publication: A1 Journal article – refereed
Field of Science: 3112 Neurosciences
3126 Surgery, anesthesiology, intensive care, radiology
Funding: This study was supported by the Academy of Finland (grant 128840) and general research funding from the Finnish Government, granted by Oulu University Hospital.
Copyright information: © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license