scotopsin

n. the specific form of opsin found in retinal rods. Scotopsin combines with 11-cis retinal to form rhodopsin, which is the functional photopigment with sensitivity to photons in the rods.

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Psychology term of the day

January 19th 2025

holism

n. any approach or theory holding that a system or organism is a coherent, unified whole that cannot be fully explained in terms of individual parts or characteristics. The system or organism may have properties as a complete entity or phenomenon in addition to those of its parts. Thus, an analysis or understanding of the parts does not provide an understanding of the whole. —holistic adj.