Senses Flashcards
Trichromatic theory
Blue, red, green cones; can’t explain afterimages or colorblindness
Opponent process theory
Red/green, yellow/blue, black/white; explains after images and colorblindness
Place theory
Depending on the frequency, different hairs in different locations will respond
Frequency theory
Hair cells fire at different rates in cochlea based on pitch
Gate control theory
Pain messages might override another
Papille
Bumps where taste buds are located
Types of tastes
sweet, salty, sour, bitter, umami
Vestibular sense
Orientation in space, semicircular canals
Kinesthetic sense
overall orientation of body, position, and body parts
Absolute threshold
Smallest stimulus we can detect
Subliminal
Below absolute threshold
Difference threshold
Smallest change to notice a difference
Weber’s Law
Difference threshold is determined by a proportion
Signal-detection theory
Discern info from distractions
Top-down processing
Fill in the gaps, faster, prone to error
Schemas
Mental representations
Perceptual set
Predisposition to perceiving something
Bottom-up processing
Features build up a perceptions; slower, more accurate
Gestalt
Groups of objects, closure, proximity, similarity, continuity
Stroboscopic effect
Flip books
Phi phenomenon
Lights blinking
Autokinetic effect
Spot of light in a dark room looks like it’s moving
Monocular depth cues
Linear perspective, relative size, interposition (blocking), texture gradient, shadowing
Binocular cues
Binocular disparity (more difference=closer), convergence (eyes move towards center for nearer objects
