کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4035720 1263545 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Judging spatial properties of simple figures
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی سیستم های حسی
پیش نمایش صفحه اول مقاله
Judging spatial properties of simple figures
چکیده انگلیسی

Discrimination was measured for height, area, and aspect ratio of ovals and rectangles. Random jittering of the orthogonal property (width, aspect ratio, and area) was used to control the observers’ criterion. Weber fractions for aspect ratio were consistently lower than those for area, and about the same as those for height. Performance with ovals and rectangles did not differ significantly.Two different methods were employed to assess the side effects of jittering. It was found that jittering reduces the discriminability of each property, though less for aspect ratio than for height or area.The hypothesis that judgements of both area and aspect ratio are linear combination of noisy estimates of height and width predicts Weber fractions for aspect ratio and for area to be 21/2 times higher than those for height. Results from unjittered trials clearly reject the hypothesis with respect to aspect ratio but not for area.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vision Research - Volume 48, Issue 11, May 2008, Pages 1290–1296
نویسندگان
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