کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4035970 1263561 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Brightness discrimination in the harbor seal (Phoca vitulina)
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی سیستم های حسی
پیش نمایش صفحه اول مقاله
Brightness discrimination in the harbor seal (Phoca vitulina)
چکیده انگلیسی

The brightness discrimination ability of a male harbor seal was investigated at an ambient illumination of 0.9 lx. The visual stimuli consisted of circular gray discs that were presented on a black background on a TFT monitor. Eight standard intensities were tested against sets of lower comparison intensities. In accordance with Weber’s law we observed a constant gain of the just noticeable intensity difference with increasing intensity of the standard stimulus. The calculated Weber fraction is 0.14. This result indicates that the brightness discrimination ability of the harbor seal is comparable to that of humans.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vision Research - Volume 48, Issue 1, January 2008, Pages 96–103
نویسندگان
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