Visual pattern discrimination in the oriental discoloured bat, Vespertilio superans.
1990
Chung K.S. | Lee J.H. | Park S.R.
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 patterns was varied, the discrimination was possible with all but the slightest differences lightness (a difference of lightness value 2).
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