Eye Spot - Ganpan

Japanese: 眼斑 - がんぱん
Eye Spot - Ganpan

…A simple light sensory organ is a scattered cutaneous light sensor in which photoreceptor cells are scattered singly on the epidermis, as seen in earthworms. A cluster of photoreceptor cells in one part of the epidermis is called an eye spot or an eye spot, as seen in the long-tailed earthworm. In either case, they cannot see the shape of the object, but they can distinguish between light and dark and orient themselves in relation to light. …

*Some of the terminology explanations that mention "eye spots" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…構造の簡単な光覚器としては,光受容細胞が表皮に単独で散在する散在皮膚光覚器があり,ミミズなどに見られる。光受容細胞が表皮の一部に集まったものは平眼または眼斑と呼ばれ,テングミズミミズに見られる。いずれの場合も形態視はできないが,明暗識別や光に対する定位を行うことができる。…

※「眼斑」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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