英和和英

出典:『Wikipedia』 (2011/05/19 14:09 UTC 版)

英語による解説

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Double cones (DCs) are two cone cells (colour detecting photoreceptors) joined together that may also be coupled optically/electrically. They are the most common type of cone cells in fish, reptiles and birds, and are present in most vertebrates, though they have been noted as absent in placental mammals, elasmobranches and catfish. There are many gap junctions between the cells of fish double cones. Their function is largely unknown; proposed functions include achromatic (non-colour vision) tasks such as detecting luminance, motion and polarization vision. Behavioural research on the reef dwelling triggerfish Rhinecanthus aculeatus has provided evidence that individual members of double cones can act as independent channels of color information.