دانلود مقاله ISI انگلیسی شماره 40186
عنوان فارسی مقاله

الگوهای و مدار در سندرم ویلیامز: مورد تبعیض گرایش بصری

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
40186 2011 9 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Patterns and trajectories in Williams Syndrome: The case of visual orientation discrimination
منبع

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

Journal : Research in Developmental Disabilities, Volume 32, Issue 3, May–June 2011, Pages 1021–1029

کلمات کلیدی
سندرم ویلیامز - اختلال ژنتیکی - توسعه - درک جهت گیری ویژوال
پیش نمایش مقاله
پیش نمایش مقاله الگوهای و مدار در سندرم ویلیامز: مورد تبعیض گرایش بصری

چکیده انگلیسی

Williams Syndrome (WS) is a developmental disorder typified by deficits in visuospatial cognition. To understand the nature of this deficit, we characterized how people with WS perceive visual orientation, a fundamental ability related to object identification. We compared WS participants to typically developing children (3–6 years of age) and typical adults in an orientation discrimination task with four stimulus types (small circular, large circular, collinear elongated and parallel elongated gratings). We measured orientation discrimination thresholds and the proportion of orthogonal errors (i.e., mirror-image reversal errors). We evaluated how these metrics (1) are modulated by stimulus condition, and (2) vary with chronological or mental age. We found that orientation perception in WS is comparable to that of typically developing children. Orientation discrimination thresholds were better for elongated gratings than circular gratings across all participant groups. For large circular gratings, the proportion of orthogonal errors was disproportionately greater in WS participants and typically developing 3–6 year old children than in typical adults. Moreover, we found that the ability to judge orientation in WS improves with increasing mental age, but not chronological age. These results suggest that orientation discrimination in WS is developmentally arrested, as opposed to abnormal or delayed.

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