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Sensation & Perception ch.4 by Alex
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senses & stuff
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psychology
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psycho.unicycler
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psycho.unicycler
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Resource summary
Sensation & Perception ch.4 by Alex
psychophysics – the study of how physical stimuli are translated into psychological experience
absolute threshold: stimuli intenseness that is detected 50% of the time
Weber’s fraction: amount of change to notice something has changed
Sensory Adaptation: getting used to stimuli because theres no new changes
The Eye
Amplitude: lets us see brightness
Wave length lets us see colours
Waves are from electro magnetic radiation
Lens: transparent and lets us focus on things close or far clearly
Retina: receives light and turns it to signals the brain can interpret
Blindspot: where optic nerve attaches there are no rods or cones
Dark adaption: eye becomes more sensitive to light in dark areas
Vision pathway is light, retina, optic nerve, thalamus, primary & secondary visual cortex
Feature detectors: help us see complex details
Conor vision is visible by wave different lengths, Trichromatic Theory is the use of three colours being added or subtracted to make all colors
Perception
Reversible figures: shift back & forth
Inattention blindness: can't see other things while focusing on something
Bottom up processing: seeing elements that make a whole
Top down processing: Whole to elements
Distal stimuli: away from body
Proximal Stimuli: things get smaller or larger from distance
Depth perception: Stimuli for how near or far something is
Retinal disparity: with 2 eyes they see slightly different due to location
Convergence: eyes turning toward or away from each other due to focusing
Motion parallax: how fast something looks when near or far
Pictorial depth cues: clues about distance in a flat picture
Perceptual consistency: further objects look smaller but are still the same size
The Ear
Measured in sound waves, frequency is pitch, amplitude is loudness & purity
Auditory Localization: knowing where sound came from
The Kinesthetic System: knows relative body position
The Vestibular System : body’s location in space, balance or equilibrium, works with semicircular canals in the inner ear
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