Chapter 9 The Eye - close, resulting in hyperpolarization c...

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Sheet1 Page 1 The Eye Chapter 9 The retina is at the back of the eye T The cornea and the lens focus light rays onto the retina o The photoreceptors are located in the back of the retina o Rods are specialized for night time vision Cones are specialized for daytime and color vision C Cones are found mainly in the central retina, rods are absent from the central retina a The fovea is the region of the retina specialized for high-resolution vision s Light changes the membrane potential via activation of G-proteins a Light hyperpolarizes photoreceptors
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Sheet1 Page 2 The photopigment in rods is called rhodopsin r Reduced cGMP levels causes Na+ channels to
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Unformatted text preview: close, resulting in hyperpolarization c There are three types of cone pigment T Bipolar cells have center-surround receptive fields f The center-surround receptive fields of ganglion cells detect light-dark contrast c There are P-type and M-type ganglion cells h M-type ganglion cells are large and have large receptive fields h They respond with a transient burst of action potentials h P-type ganglion cells are small and have small receptive fields h They respond with sustained action potential firing for as long as stimulus is on s Some p-type ganglion cells have color-opponent receptive fields o...
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This note was uploaded on 04/03/2008 for the course NEUROBIOLO Fund Neuro taught by Professor Schjott during the Spring '08 term at Rutgers.

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Chapter 9 The Eye - close, resulting in hyperpolarization c...

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