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KMID : 0364219900330020127
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Korean Journal of Zoology
1990 Volume.33 No. 2 p.127 ~ p.132
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Visual Pattern Discrimination in the Oriental Discoloured Bat,Vespertilio superans
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Chung Kun-Sang
Lee Ju-Hyeung
Park Shi-Ryong
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Abstract
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The visual discrimination ability of Vespertilio superans was investigated with a male and a female. In a controlled experimental situation (two-choice apparatus), using a vertical bar and a circle of the same area of the bar, it was established that discrimination between different shapes of the same size was impossible. However, with patterns in which the surface areas substantially differed, the bats were able to discriminate between them to a statistically significant degree. Continuing with experiments in which the lightness of the 2 paritems was varied, the disrimination was possible with all but the slightest differences in lightness (a difference of lightness value 2).
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KEYWORD
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Visual discrimination , Vespertilio superans
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