Midterm 3! Flashcards
Light
Electromagnetic radiation
Varies in amplitude
Perception of brightness
Varies in wavelength
Perception of colour
Purity
Mixture ot wavelength in the light
Saturation
Richness ot colours, amount ot white in a colour
Receptive fields
Retinal area that affects firing of cell
Huge and Wiesel
1simple→width and orientation of lines when in right position
2complex→ width, orientation, in any position
Dorsal pathway (parieta)
“Where’ an object is and “howl to use it
Trichromatic theory
3receptors→photopigmentssensitive to longs medium or short wavelengths. Different levels of neural activation translated into dicterent colours
Opponent process theory (Hering)
3 pairs of antagonistic colours. Red/green blue/yellow black/white
Trichromatic theory applies at what level?
Retinal level
Opponent process theory applies where?
Retina (ganglion cells), LGN, and visual cortex
Perceptual set
Readiness to perceivein a particular way
Inattentional blindness
Failure to see visible objects or eventsbecause attention is focused elsewhere
Feature analysis
Process of defecting specific elements in visual
Input and assemble into more complex form