دانلود مقاله ISI انگلیسی شماره 71173
عنوان فارسی مقاله

اختلالات سازمان ادراکی در بیماران آسیب های مغزی

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
71173 2015 11 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Perceptual organization deficits in traumatic brain injury patients
منبع

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

Journal : Neuropsychologia, Volume 78, November 2015, Pages 142–152

کلمات کلیدی
آسیب های مغزی ؛ آسیب آکسونی؛ سازمان ادراکی؛ چهره های تعبیه شده - حرکت منسجم
پیش نمایش مقاله
پیش نمایش مقاله اختلالات سازمان ادراکی در بیماران آسیب های مغزی

چکیده انگلیسی

Traumatic brain injury (TBI) is a prevalent condition and there is limited visual perception research with this population. Here, we investigated perceptual organization changes in a rather homogeneous sample of closed head TBI outpatients with diffuse axonal injury only and no other known comorbidities. Patients had normal or corrected visual acuity. Perceptual organization was measured with the Leuven Perceptual Organization Screening Test (L-POST), a coherent motion task (CM) and the Leuven Embedded Figures Test (L-EFT). These tests were chosen to screen for deficits in different aspects of perceptual organization (L-POST), to evaluate local and global processing (L-EFT) and grouping in a dynamic set of stimuli (CM). TBI patients were significantly impaired compared to controls in all measures for both response time and accuracy, except for CM thresholds and object recognition subtests. The TBI group was similarly affected in all aspects of the L-EFT. TBI was also similarly affected in all perceptual factors of the L-POST. No significant correlations were found between scores and time post-injury, except for CM thresholds (rs=−0.74), which might explain the lack of group-level differences. The only score significantly correlated to IQ was L-EFT response time (rs=−0.67). These findings demonstrate that perceptual organization is diffusely affected in TBI and this effect has no substantial correlations with IQ. As many of the neuropsychological tests used to measure different cognitive functions involve some level of visual discrimination and perceptual organization demands, these results must be taken into account in the general neuropsychological evaluation of TBI patients.

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