〘noun〙 A sensation caused by the stimulus of light. In particular, it is the perception of differences in luminosity from white to black, and together with color vision, it constitutes vision. It is also seen in protozoa, but visual images are only possible in animals with lens-shaped eyes. In higher animals, it is sensed by the action of rods in the retina . Light sensation. *Physics and Sensation (1917) by Torahiko Terada, "I will leave the issues relating to light perception to the domain of physiology." Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information |
〘名〙 光の刺激によって生ずる感覚。特に白から黒にいたる光度の差を知覚し、色覚とともに視覚を構成する。原生動物にもみられるが、視像が可能となるにはレンズ眼を有する動物に限られる。高等動物では網膜にある杆状(かんじょう)体の働きによって感受される。光(ひかり)感覚。※物理学と感覚(1917)〈寺田寅彦〉「光覚に関する問題は生理学の領分に譲って」
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