NROC64H3 Lecture 2: Lecture 2.docx
19 Oct 2013
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Document Summary
Describe the sensory transduction of the taste of bitter within a taste cell: g-protein receptors. G -protein secondary messenger: activates ca2+ channels in which way is this process similar to that of the taste of sweet, same cascade system mechanism, using different g-proteins. Despite this commonality, how can we distinguish between bitter and sweet: some selectivity is preserved, using different proteins, population coding. Significance of vision relationship between human eye and camera retina: photoreceptors converts light energy into neural activity. How is an image formed in the eye. Anatomy of the retina receptor physiology retinal computations. Amplitude: study of light rays and their interactions reflection. Bouncing of light rays off a surface. Absorption transfer of light energy to a particle or surface refraction. Bending of light rays from one medium to another. Gross anatomy of the eye: pupil. Opening where light enters the eye: sclera. Glassy transparent external surface of the eye: optic nerve.
