01:830:101 Lecture Notes - Lecture 15: Depth Perception, Supercell, 3D Film
6 Jun 2018
School
Department
Course
Professor
Module 19: Vision: Sensory and Perceptual Processing
Sensory and Perceptual Processing in Vision
• What is seen as light is only a thin slice of the broad spectrum of electromagnetic
energy.
• The portion visible to humans extends from the blue-violet to the red light
wavelengths.
• After entering the eye and being focused by a lens, light energy particles strike the
eye’s ier surfae, the retia.
• The perceived hue in a light depends on its wavelength, and its brightness depends
on its intensity.
LIGHT ENERGY: FROM THE ENVIRONMENT INTO THE BRAIN
• Waves vary in wavelength, the distance between successive peaks.
• Frequency, the number of complete wavelengths that can pass a point in a given time,
depends on the length of the wave.
• Waves also vary in amplitude, the height from peak to trough (top to bottom). Wave
find more resources at oneclass.com
find more resources at oneclass.com
172
01:830:101 Full Course Notes
Verified Note
172 documents
Document Summary
Rods and cones: cones and rods each provide a special sensitivity, cones are sensitive to detail and color, rods are sensitive to faint light. Vision: visual information processing: how does the brain turn light stimuli into useful information about the world, collection and analysis of sensory information, linkage of optic nerve with neurons in thalamus. Involves nerve cells in the brain that respond to specific feature of the stimulus, such as shape, angle, or movement. Information processing in the eye and brain: hubel and wiesel, sho(cid:449)ed (cid:271)rai(cid:374)"s (cid:272)o(cid:373)puti(cid:374)g syste(cid:373) de(cid:272)o(cid:374)stru(cid:272)ts a(cid:374)d the(cid:374) reasse(cid:373)(cid:271)les (cid:448)isual images, found specialized occipital lobe neuron cells receive information from ganglions cells and pass to supercell clusters. Visual organization: gestalt principles: gestalt psychologists propose principles used to organize sensations into perception, form perception, depth perception, perceptual constancy. Vision: visual organization: how do we organize and interpret the shapes and colors into meaningful perceptions, people tend to organize pieces of information into an organized whole or gestalt.
