دانلود مقاله ISI انگلیسی شماره 70175
عنوان فارسی مقاله

دوره مقاوم به شنوایی غیرمعمولی در کودکان از پس زمینه پایین تر وضعیت اجتماعی و اقتصادی : شواهد ERP برای نقش توجه انتخابی

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
70175 2015 11 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Atypical auditory refractory periods in children from lower socio-economic status backgrounds: ERP evidence for a role of selective attention
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : International Journal of Psychophysiology, Volume 95, Issue 2, February 2015, Pages 156–166

کلمات کلیدی
وضعیت اجتماعی و اقتصادی؛ SES؛ دوره نسوز؛ ERP؛ توجه؛ پردازش شنیداری
پیش نمایش مقاله
پیش نمایش مقاله دوره مقاوم به شنوایی غیرمعمولی در کودکان از پس زمینه پایین تر وضعیت اجتماعی و اقتصادی : شواهد ERP برای نقش توجه انتخابی

چکیده انگلیسی

Previous neuroimaging studies indicate that lower socio-economic status (SES) is associated with reduced effects of selective attention on auditory processing. Here, we investigated whether lower SES is also associated with differences in a stimulus-driven aspect of auditory processing: the neural refractory period, or reduced amplitude response at faster rates of stimulus presentation. Thirty-two children aged 3 to 8 years participated, and were divided into two SES groups based on maternal education. Event-related brain potentials were recorded to probe stimuli presented at interstimulus intervals (ISIs) of 200, 500, or 1000 ms. These probes were superimposed on story narratives when attended and ignored, permitting a simultaneous experimental manipulation of selective attention. Results indicated that group differences in refractory periods differed as a function of attention condition. Children from higher SES backgrounds showed full neural recovery by 500 ms for attended stimuli, but required at least 1000 ms for unattended stimuli. In contrast, children from lower SES backgrounds showed similar refractory effects to attended and unattended stimuli, with full neural recovery by 500 ms. Thus, in higher SES children only, one functional consequence of selective attention is attenuation of the response to unattended stimuli, particularly at rapid ISIs, altering basic properties of the auditory refractory period. Together, these data indicate that differences in selective attention impact basic aspects of auditory processing in children from lower SES backgrounds.

خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.