Electrocortical Dynamics in Children with a Language-Learning Impairment Before and After Audiovisual Training

Autor: April A. Benasich, Sabine Heim, Naseem Choudhury
Rok vydání: 2015
Předmět:
Male
Electroencephalography
Audiology
Event-related potential (ERP)
0302 clinical medicine
Child
Pitch Perception
10. No inequality
Evoked Potentials
Language
Cerebral Cortex
Language Tests
Audiovisual Aids
Radiological and Ultrasound Technology
medicine.diagnostic_test
Learning Disabilities
05 social sciences
Brain
Language acquisition
Language development
Neurology
Radiology Nuclear Medicine and imaging
Auditory Perception
Evoked Potentials
Auditory
Speech Perception
Female
Anatomy
Psychology
Auditory perception
medicine.medical_specialty
Speech perception
Clinical Neurology
Dysfunctional family
Stimulus (physiology)
050105 experimental psychology
Auditory sequential processing
Computerized training
Specific language impairment (SLI)
03 medical and health sciences
Language assessment
medicine
Humans
Learning
0501 psychology and cognitive sciences
Radiology
Nuclear Medicine and imaging
Electroencephalography (EEG)
Original Paper
Acoustic Stimulation
Neurology (clinical)
Neuroscience
030217 neurology & neurosurgery
Zdroj: Brain Topography
ISSN: 1573-6792
0896-0267
DOI: 10.1007/s10548-015-0466-y
Popis: Detecting and discriminating subtle and rapid sound changes in the speech environment is a fundamental prerequisite of language processing, and deficits in this ability have frequently been observed in individuals with language-learning impairments (LLI). One approach to studying associations between dysfunctional auditory dynamics and LLI, is to implement a training protocol tapping into this potential while quantifying pre- and post-intervention status. Event-related potentials (ERPs) are highly sensitive to the brain correlates of these dynamic changes and are therefore ideally suited for examining hypotheses regarding dysfunctional auditory processes. In this study, ERP measurements to rapid tone sequences (standard and deviant tone pairs) along with behavioral language testing were performed in 6- to 9-year-old LLI children (n = 21) before and after audiovisual training. A non-treatment group of children with typical language development (n = 12) was also assessed twice at a comparable time interval. The results indicated that the LLI group exhibited considerable gains on standardized measures of language. In terms of ERPs, we found evidence of changes in the LLI group specifically at the level of the P2 component, later than 250 ms after the onset of the second stimulus in the deviant tone pair. These changes suggested enhanced discrimination of deviant from standard tone sequences in widespread cortices, in LLI children after training.
Databáze: OpenAIRE
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