Impact of theta transcranial alternating current stimulation on language production in adult classic galactosemia patients.
P300
classic galactosemia
event related potentials
language production
late positivity
theta time frequency
transcranial alternating current stimulation (tACS)
Journal
Journal of inherited metabolic disease
ISSN: 1573-2665
Titre abrégé: J Inherit Metab Dis
Pays: United States
ID NLM: 7910918
Informations de publication
Date de publication:
24 Apr 2024
24 Apr 2024
Historique:
revised:
19
03
2024
received:
27
10
2023
accepted:
04
04
2024
medline:
25
4
2024
pubmed:
25
4
2024
entrez:
25
4
2024
Statut:
aheadofprint
Résumé
Patients with classic galactosemia (CG), an inborn error of galactose metabolism, suffer from impairments in cognition, including language processing. Potential causes are atypical brain oscillations. Recent electroencephalogram (EEG) showed differences in the P300 event-related-potential (ERP) and alterations in the alpha/theta-range during speech planning. This study investigated whether transcranial alternating current stimulation (tACS) at theta-frequency compared to sham can cause a normalization of the ERP post stimulation and improves language performance. Eleven CG patients and fourteen healthy controls participated in two tACS-sessions (theta 6.5 Hz/sham). They were engaged in an active language task, describing animated scenes at three moments, that is, pre/during/post stimulation. Pre and post stimulation, behavior (naming accuracy, voice-onset-times; VOT) and mean-amplitudes of ERP were compared, by means of a P300 time-window analysis and cluster-based-permutation testing during speech planning. The results showed that theta stimulation, not sham, significantly reduced naming error-percentage in patients, not in controls. Theta did not systematically speed up naming beyond a general learning effect, which was larger for the patients. The EEG analysis revealed a significant pre-post stimulation effect (P300/late positivity), in patients and during theta stimulation only. In conclusion, theta-tACS improved accuracy in language performance in CG patients compared to controls and altered the P300 and late positive ERP-amplitude, suggesting a lasting effect on neural oscillation and behavior.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Galactosemia Foundation
ID : 2019
Informations de copyright
© 2024 The Authors. Journal of Inherited Metabolic Disease published by John Wiley & Sons Ltd on behalf of SSIEM.
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