Aim: To describe the features of cortical oscillatory activity and neuronal synchronization by monitoring responses evoked by chirp-modulated tone (CMT) and look for relationships with cognition in healthy children.
Methods: We recruited 23 healthy children, 1-18 years old, assessed their cognitive abilities and recorded the cortical oscillatory activity evoked by CMTs. We obtained descriptive statistics and looked for correlations with cognitive abilities.
Results: In the low gamma band, the neuronal synchronization evoked by CMTs increased with age, reaching adult features by 12 years of age (rho = 0.5; p = 0.042). In the high gamma band, neuronal recruitment was greater at younger ages (rho = -0.55; p = 0.029). In four of the six under-6-year-old participants, there was no CMT-evoked response. We found that the greater a child's receptive vocabulary skills, the lower the frequency at which maximal neuronal recruitment occurred (rho = -0.65; p = 0.003).
Interpretation: CMT-evoked cortical oscillatory activity is affected by degree of brain maturation and could be a potential biomarker of language-related disability. Our description of the cortical responses evoked by CMTs in healthy children is a step towards recognition of abnormal patterns and the possible use of this approach as a biomarker of brain disorders in children.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11698919 | PMC |
| http://dx.doi.org/10.1016/j.heliyon.2024.e40599 | DOI Listing |
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