کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3037190 1184404 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Facial identity recognition in children with autism spectrum disorders revealed by P300 analysis: A preliminary study
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب تکاملی
پیش نمایش صفحه اول مقاله
Facial identity recognition in children with autism spectrum disorders revealed by P300 analysis: A preliminary study
چکیده انگلیسی

Background: To reveal the neural substrate of communication difficulties in children with autism spectrum disorders (ASDs), we investigated the P300 component of event-related potentials (ERPs) as represented by the average of electroencephalography findings time-locked to events and behavior. Because the P300 amplitude influences attentional resource allocation during discrimination, the component elicited during perception of known and unknown faces should indicate familiarity processing. Methods and results: Nine typically developing children (TD) and nine children with ASDs participated in this study (Experiment 1). The P300 amplitude in TD children was significantly larger during familiar face perception than during unfamiliar face perception (p < 0.01). However, there was no evidence of familiarity effect in children with ASDs. In three children with ASDs, we also assessed the P300 amplitude during perception of a therapist’s face one month before (baseline), a few days before and after social skills training (SST) sessions (Experiment 2). To evaluate the effect of familiarity on facial identity processing, we analyzed the therapist/unknown ratio of P300 amplitudes related to the face discrimination task as an index. The ratio was larger after SST sessions than before, but there was no difference in the ratio between baseline and before SST assessments. Conclusion: The P300 might be influenced by attentional resource allocation depending on the stage of learning face identification in children with ASDs. We speculate that this approach to evaluating brain responses during facial identity recognition could be used as a tool to clarify children’s communication difficulties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain and Development - Volume 35, Issue 4, April 2013, Pages 293–298
نویسندگان
, , , , , , , , ,