Neurophysiological indices of attention to speech in children with specific language impairment.

摘要: Abstract Objective The aim was to determine whether children with specific language impairment (SLI) differed from typical development (TLD) in their allocation of attention speech sounds. Methods Event-related potentials were recorded non-target sounds two tasks (passive-watch a video and attend target tones among sounds) experiments, one using 50-ms duration vowels the second 250-ms vowels. difference ERPs across examined latency range early negative wave (Nd) found adults. Analyses data selected superior inferior sites compared those electrical field power (i.e., global or GFP). topography ERP at maximum GFP also examined. Results A difference, comparable adult Nd, observed passive task for both types analysis, suggesting attentional resources processing stimuli task. Children TLD showed greater negativity than SLI long vowels, that they allocated more this group. This effect only significant analysis seen as smaller group significantly later reaching GFP. In addition, proportion left-greater-than-right frontocentral amplitude determined each child’s peak. Conclusions generally when is directed auditory modality visual modality. However, TLD, unlike SLI, appear devote some even which are instructed information ignore speech. Significance These findings suggest have limited resources, poorer dividing attention, less automatic allocating typically developing skills.