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    Thresholds of retinal and extraretinal photoreceptors measured by photobehavioral response in catfish,Silurus asotus

    Light thresholds of retinal and extraretinal photoreceptors in catfish were examined by the photobehavioral response using a method in which reflex body movements are recorded. Thresholds were determined in si...

    Mitsuo Tabata, Maung Minh-Nyo, Mikio Oguri in Journal of Comparative Physiology A (1989)