Responsivity to dyslexia training indexed by the N170 amplitude of the brain potential elicited by word reading
Gonzáles, G. F., Žarić, G., Tijms, J., Bonte, M., Blomert, L., Leppänen, P. H., & van der Molen, M. W. (2016). Responsivity to dyslexia training indexed by the N170 amplitude of the brain potential elicited by word reading. Brain and Cognition, 106, 42-54. https://doi.org/10.1016/j.bandc.2016.05.001
Julkaistu sarjassa
Brain and CognitionTekijät
Päivämäärä
2016Tekijänoikeudet
© 2016 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license.
The present study examined training effects in dyslexic children on reading fluency and the amplitude of
N170, a negative brain-potential component elicited by letter and symbol strings. A group of 18 children
with dyslexia in 3rd grade (9.05 ± 0.46 years old) was tested before and after following a letter-speech
sound mapping training. A group of 20 third-grade typical readers (8.78 ± 0.35 years old) performed a
single time on the same brain potential task. The training was differentially effective in speeding up reading
fluency in the dyslexic children. In some children, training had a beneficial effect on reading fluency
(‘improvers’) while a training effect was absent in others (‘non-improvers’). Improvers at pre-training
showed larger N170 amplitude to words compared to non-improvers. N170 amplitude decreased following
training in improvers but not in non-improvers. But the N170 amplitude pattern in improvers continued
to differ from the N170 amplitude pattern across hemispheres seen in typical readers. Finally, we
observed a positive relation between the decrease in N170 amplitude and gains in reading fluency.
Collectively, the results that emerged from the present study indicate the sensitivity of N170 amplitude
to reading fluency and its potential as a predictor of reading fluency acquisition.
...
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0278-2626Asiasanat
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https://converis.jyu.fi/converis/portal/detail/Publication/25715122
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