Brightness Discrimination in Larvae of Plaice and Sole
Open Access
- 1 December 1972
- journal article
- Published by The Company of Biologists in Journal of Experimental Biology
- Vol. 57 (3) , 693-700
- https://doi.org/10.1242/jeb.57.3.693
Abstract
The brightness discrimination of larvae of plaice and sole was tested by subjecting them to a choice of moving phototactically to one of two horizontally opposed light sources. At higher light levels, above 100-10-1m-candles, they moved to the brighter of the two lights; below 10-1-10-2 m-candles they moved to the dimmer. Brightness discrimination, expressed as the increment (ΔI) discriminated as a percentage of the dimmer light (I) (the Weber fraction), was of the order of 60-200%.Keywords
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