کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4036799 1263643 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimal size for perceiving motion decreases with contrast
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی سیستم های حسی
پیش نمایش صفحه اول مقاله
Optimal size for perceiving motion decreases with contrast
چکیده انگلیسی

Visual patterns have widely varying contrasts and elicit local signals of varying reliability, ranging from noisy to relatively noise-free. One way to deal efficiently with the variable visual input is to employ flexible neural mechanisms that adapt to changing conditions. We investigated whether the spatial properties of motion mechanisms change with stimulus contrast and found that the optimal size for perceiving motion decreases with increasing contrast. These data were well-described by a model in which spatial summation increases with decreasing contrast.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vision Research - Volume 45, Issue 16, July 2005, Pages 2059–2064
نویسندگان
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