Eesha Sharma MD Sense organs Receptor potential Generator potential Psychophysics Gustav Theodor Fechner 1860 Quantitative relationship between physical stimuli and the sensations and perceptions they effect ID: 247104
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Sensory process & perception
Eesha Sharma, MDSlide2
Sense organsSlide3Slide4
Receptor potential
Generator potentialSlide5
Psychophysics
Gustav Theodor Fechner, 1860
Quantitative relationship between physical stimuli and the sensations and perceptions they effect
S
ubject’s experience or behaviorObjectively measurable stimuliAbsolute thresholds
Discrimination thresholdsScalingSlide6Slide7Slide8Slide9Slide10Slide11Slide12
Perceptual processes
Attention
Form perception
Visual depth perceptionConstancyMovement perceptionPlasticityIndividual differencesSlide13
Attention
The perceptual process that selects certain inputs for inclusion in our conscious experience, or awareness, at any given timeSlide14
Filtering
Parallel processing
Serial processing
Processing capacitySlide15
Form perception
Recognition of a figure on a groundSlide16
ContoursSlide17
Organization
Gestalt: The whole is more than the sum of its parts
Laws of perceptual organization
ProximitySimilarityS
ymmetry or good figureContinuationClosureSlide18Slide19Slide20
Visual depth perception
Monocular cues
Linear perspective
ClearnessInterpositionShadows
Gradients of textureMovement
Binocular cues
Retinal disparitySlide21Slide22
Constancy
Size constancy
Results when the object and its background change together in such a way that the relationship between them stays the same
Moon in the night skyBrightness constancy
Result of unchanged brightness ratiosSlide23Slide24
Movement perception
Real motion perception
Constancy: because of unchanged relationship between object and its background
The brain comparator Apparent motion
Stroboscopic motionAutokinetic effectInduced movement Slide25
Plasticity
Visual deprivation
Sensitive period
Nature and nurtureSlide26
Individual differences
Perceptual learning
An increase in the ability to extract information from the environment as a result of experience or practice with the stimulation coming from it
Ornithologists; Blind people
SetReadiness or priming for certain kinds of sensory input Motives and needs
Rorschach inkblotsPerceptual-cognitive styleFlexibility
Field dependenceSlide27Slide28Slide29