کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6203017 1603176 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Size matters: Perceived depth magnitude varies with stimulus height
ترجمه فارسی عنوان
اندازه مسائل: میزان عمق درک شده با افزایش محرک متفاوت است
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی سیستم های حسی
چکیده انگلیسی


- We found that perceived depth magnitude increases with increase in stimulus height.
- This result generalized across several depth estimation methods and stimuli types.
- Size-disparity correlation and excitatory connections could account for this result.

Both the upper and lower disparity limits for stereopsis vary with the size of the targets. Recently, Tsirlin, Wilcox, and Allison (2012) suggested that perceived depth magnitude from stereopsis might also depend on the vertical extent of a stimulus. To test this hypothesis we compared apparent depth in small discs to depth in long bars with equivalent width and disparity. We used three estimation techniques: a virtual ruler, a touch-sensor (for haptic estimates) and a disparity probe. We found that depth estimates were significantly larger for the bar stimuli than for the disc stimuli for all methods of estimation and different configurations. In a second experiment, we measured perceived depth as a function of the height of the bar and the radius of the disc. Perceived depth increased with increasing bar height and disc radius suggesting that disparity is integrated along the vertical edges. We discuss size-disparity correlation and inter-neural excitatory connections as potential mechanisms that could account for these results.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vision Research - Volume 123, June 2016, Pages 41-45
نویسندگان
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