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  • Title: Reexamination of spectral mechanisms in the rat (Rattus norvegicus).
    Author: Neitz J, Jacobs GH.
    Journal: J Comp Psychol; 1986 Mar; 100(1):21-9. PubMed ID: 3698578.
    Abstract:
    The spectral mechanisms of the rat were studied in electrophysiological and behavioral experiments. The photopic electroretinogram (ERG) was recorded (a) to rapidly flickering lights, (b) during the cone phase of dark adaptation, and (c) with a flicker photometric procedure. Each procedure indicated the presence of a single cone mechanism having a lambda max of about 510 nm. Increment-threshold spectral sensitivity functions measured in a behavioral test situation yielded the same conclusion. A behavioral experiment failed to produce any evidence for the presence of color vision in this rodent. The consistent conclusion from both behavioral and electrophysiological experiments is that the rat retina contains only a single photopic spectral mechanism.
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