vision - Receptive Fields Retina +---+ +--+ + LGN...

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Sensory Systems 1. Visual 2. Auditory 3. Somatosensory 4. Gustatory 5. Olfactory acoustic vestibular cutaneous proprioceptive } chemical (flavor)
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Vision
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Adequate Stimulus: A stimulus of a quality and of sufficient intensity to excite a sensory receptor. Adequate Stimulus for Visual System: Electromagnetic wave with a wavelength between 350 and 750 nm and of sufficient intensity to excite a photoreceptor.
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bipolar cells amacrine cells ganglion cells horizontal cells photoreceptors rods cones
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receptive field sizes
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Cones in central retina Cones in peripheral retina Rods in peripheral retina
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rhodopsin 11-cis retinal + opsin all-trans retinal + opsin 11-cis retinal All-trans retinal opsin opsin
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direct vs. indirect pathways to ganglion cells
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mapping receptive fields
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Unformatted text preview: Receptive Fields Retina +---+ +--+ + LGN +---+--Visual Cortex Receptive Fields Retina +---+ +--+ + LGN +--+--V1 +--Orientation Columns Ocular Dominance Columns where what Young-Helmholtz theory, or Trichromatic theory, of color vision Opponent process theory of color vision where what Motion-Induced Blindness http://www.sandlotscience.com Binocular cues for depth perception vergence movements ocular disparity, or parallax (stereoscopic depth perception) Stereoscopic depth perception Monocular cues for depth perception occlusion (overlapping) apparent elevation line convergence color shifts (great distances) movement parallax, relative motion size texture loss of contrast (great distances) shading Occlusion Shading Line convergence Apparent height Relative size Texture Texture Apparent height Texture Contrast Color shift Texture Convergence Apparent height Relative size Ball and Shadow Illusion Changes in these cues as objects move, or as we move, provides additional information Retinotectal System Controls eye movements 1. Saccades 2. Smooth pursuit 3. Vergence 4. Jitter 5. Nystagmus Retinotectal pathway retina optic tectum (superior colliculus)...
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vision - Receptive Fields Retina +---+ +--+ + LGN...

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