sp_lect7 - Tuesday Eye Retina Fig 11.28 Inefficient...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Tuesday, February 06, 2007 Eye / Retina Fig 11.28 Inefficient organization of retina Photoreceptors Fig 11.30 Rods and cones Photon – hyperpolarizes membrane of a photoreceptor Rods are larger Phototransduction Fig 11.31 Rhodopsin – similar to metabotropic receptor – activates a G protein Retinal Rod Fig 11.32a and b Na channels that open only in presence of cGMP Look at the steps Light and dark different Absorbance spectra Fig 11.33 Fig 11.29 Cones – high visual acuity, color, because each cone is connected to its own bi-polar cell and ganglion cell Rods – light sensitivity, no color vision Fovea – concentration of cones Table 11.4 Each rod provides input to many ganglion cells Visual Cortex Fig 11.4, Fig 10.13 Occipital lobe – visual center Visual cortex – map of the retina Temporal cortex – “what is it?” identifies the object being viewed Posterior parietal cortex – “where is the object?” locates it in 3D space
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/03/2008 for the course CELL BIO & 356 taught by Professor Merrill during the Spring '08 term at Rutgers.

Page1 / 2

sp_lect7 - Tuesday Eye Retina Fig 11.28 Inefficient...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online