... in the brain ( Hisano et al., 1972 ; Gotow et al., 1973 ; Gotow, 1989 ; Gotow and Nishi, 2008 ) as well as other extraocular photoreceptors ( Katagiri, 1984 ; Katagiri et al., 1985 , 2002 ). However, in a large photosensitive neuron, A-P-1, in the brain, for example, neither visual pigments nor...

... by The Company of Biologists Ltd 2015 Highlighted Article : Squid and cuttlefish skin chromatophores contain rhodopsin, G qα and sTRP channels, which are necessary components for photoreception. Rhodopsin Retinochrome Extraocular photoreceptor Skin Many animals have complex image-forming...

...Christopher S. Cobb; Roddy Williamson ABSTRACT Intracellular recordings were made from extraocular photoreceptor cells within isolated epistellar bodies of the lesser or northern octopus Eledone cirrhosa. The cells had resting potentials around −41±5 mV (mean ± S.D., N =60) and showed light-flash...

... neurone is regulated by a spontaneously active excitatory descending interneurone (DI) that is, in turn, inhibited by an uncharacterised extraocular photoreceptor (EOP) system located in the brain. Light directed at the brain results in inhibition of DI activity, which thereby deprives the VPLI neurone...