دانلود مقاله ISI انگلیسی شماره 73747
عنوان فارسی مقاله

ساختار همبستگی از آزمون لوب پیشانی و تست هوش دو جزء با ارتباط عصب روانشناختی نامتقارن در سن را نشان می دهد

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
73747 2014 13 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Correlational structure of ‘frontal’ tests and intelligence tests indicates two components with asymmetrical neurostructural correlates in old age
منبع

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

Journal : Intelligence, Volume 46, September–October 2014, Pages 94–106

کلمات کلیدی
سالمندی؛ لوب پیشانی؛ اطلاعات - عصب روانشناختی؛
پیش نمایش مقاله
پیش نمایش مقاله ساختار همبستگی از آزمون لوب پیشانی و تست هوش دو جزء با ارتباط عصب روانشناختی نامتقارن در سن را نشان می دهد

چکیده انگلیسی

Both general fluid intelligence (gf) and performance on some ‘frontal tests’ of cognition decline with age. Both types of ability are at least partially dependent on the integrity of the frontal lobes, which also deteriorate with age. Overlap between these two methods of assessing complex cognition in older age remains unclear. Such overlap could be investigated using inter-test correlations alone, as in previous studies, but this would be enhanced by ascertaining whether frontal test performance and gf share neurobiological variance. To this end, we examined relationships between gf and 6 frontal tests (Tower, Self-Ordered Pointing, Simon, Moral Dilemmas, Reversal Learning and Faux Pas tests) in 90 healthy males, aged ~ 73 years. We interpreted their correlational structure using principal component analysis, and in relation to MRI-derived regional frontal lobe volumes (relative to maximal healthy brain size). gf correlated significantly and positively (.24 ≤ r ≤ .53) with the majority of frontal test scores. Some frontal test scores also exhibited shared variance after controlling for gf. Principal component analysis of test scores identified units of gf-common and gf-independent variance. The former was associated with variance in the left dorsolateral (DL) and anterior cingulate (AC) regions, and the latter with variance in the right DL and AC regions. Thus, we identify two biologically-meaningful components of variance in complex cognitive performance in older age and suggest that age-related changes to DL and AC have the greatest cognitive impact.

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