...Rikard Frederiksen; Gordon L. Fain; Alapakkam P. Sampath ABSTRACT Retinal bipolar cells receive direct input from rod and cone photoreceptors and send axons into the inner retina, synapsing onto amacrine and ganglion cells. Bipolar cell responses can be either depolarizing (ON) or hyperpolarizing...

...David Wilby; Nicholas W. Roberts ABSTRACT Oil droplets are spherical organelles found in the cone photoreceptors of vertebrates. They are generally assumed to focus incident light into the outer segment, and thereby improve light catch because of the droplets' spherical lens-like shape. However...

... and adult. The molecular sequences of the rod ( Rh1 ) and six cone ( SWS1 , SWS2A and B , Rh2A α and β, and LWS ) opsins were obtained and their expression levels in larval and adult stages examined using quantitative RT-PCR. The changes in spectral sensitivity of the cones were related to the differing...

... and transferred to the retinal pigment epithelium (RPE) to store as all- trans retinyl ester. This ester pool is subsequently utilized for visual pigment regeneration. However, there is a lack of information on the putative cone visual cycle. In the present study, we provide experimental evidence in support...

...Jon Vidar Helvik; Øyvind Drivenes; Torstein Harboe; Hee-Chan Seo SUMMARY The identities of single cone cells in the retina of Atlantic halibut ( Hippoglossus hippoglossus ) larvae were studied by in situ hybridisation using RNA probes for the five different halibut opsins. Four different cone...

... of single-cone photoreceptor sensitive to ultraviolet, short-, medium- or long-wavelength light. To establish how these receptors are used for colour vision, stimuli were designed to be distinguished only by specific combinations of receptors. We infer (1) that all four single cones are used, and (2...

... Productivity Division, Recruitment and Trophic Relations Section, Maurice-Lamontagne Institute, Fisheries and Oceans Canada, PO Box 1000, Mont-Joli, Québec, Canada G5H 3Z4. 07 09 1993 © 1994 by Company of Biologists 1994 foraging vision retina cone Daphnia pulex Oncorhynchus...