TY - JOUR
T1 - Atypical beta power fluctuation while listening to an isochronous sequence in dyslexia
AU - Chang, Andrew
AU - Bedoin, Nathalie
AU - Canette, Laure-Helene
AU - Nozaradan, Sylvie
AU - Thompson, Dave
AU - Corneyllie, Alexandra
AU - Tillmann, Barbara
AU - Trainor, Laurel J.
PY - 2021
Y1 - 2021
N2 - Objective: Developmental dyslexia is a reading disorder that features difficulties in perceiving and tracking rhythmic regularities in auditory streams, such as speech and music. Studies on typical healthy participants have shown that power fluctuations of neural oscillations in beta band (15–25 Hz) reflect an essential mechanism for tracking rhythm or entrainment and relate to predictive timing and attentional processes. Here we investigated whether adults with dyslexia have atypical beta power fluctuation. Methods: The electroencephalographic activities of individuals with dyslexia (n = 13) and typical control participants (n = 13) were measured while they passively listened to an isochronous tone sequence (2 Hz presentation rate). The time–frequency neural activities generated from auditory cortices were analyzed. Results: The phase of beta power fluctuation at the 2 Hz stimulus presentation rate differed and appeared opposite between individuals with dyslexia and controls. Conclusions: Atypical beta power fluctuation might reflect deficits in perceiving and tracking auditory rhythm in dyslexia. Significance: These findings extend our understanding of atypical neural activities for tracking rhythm in dyslexia and could inspire novel methods to objectively measure the benefits of training, and predict potential benefit of auditory rhythmic rehabilitation programs on an individual basis.
AB - Objective: Developmental dyslexia is a reading disorder that features difficulties in perceiving and tracking rhythmic regularities in auditory streams, such as speech and music. Studies on typical healthy participants have shown that power fluctuations of neural oscillations in beta band (15–25 Hz) reflect an essential mechanism for tracking rhythm or entrainment and relate to predictive timing and attentional processes. Here we investigated whether adults with dyslexia have atypical beta power fluctuation. Methods: The electroencephalographic activities of individuals with dyslexia (n = 13) and typical control participants (n = 13) were measured while they passively listened to an isochronous tone sequence (2 Hz presentation rate). The time–frequency neural activities generated from auditory cortices were analyzed. Results: The phase of beta power fluctuation at the 2 Hz stimulus presentation rate differed and appeared opposite between individuals with dyslexia and controls. Conclusions: Atypical beta power fluctuation might reflect deficits in perceiving and tracking auditory rhythm in dyslexia. Significance: These findings extend our understanding of atypical neural activities for tracking rhythm in dyslexia and could inspire novel methods to objectively measure the benefits of training, and predict potential benefit of auditory rhythmic rehabilitation programs on an individual basis.
UR - https://hdl.handle.net/1959.7/uws:65582
U2 - 10.1016/j.clinph.2021.05.037
DO - 10.1016/j.clinph.2021.05.037
M3 - Article
SN - 1388-2457
VL - 132
SP - 2384
EP - 2390
JO - Clinical Neurophysiology
JF - Clinical Neurophysiology
IS - 10
ER -