Unit 4 Flashcards
Prosopagnosia
Face blindnes
Bottom up processing
Sensory analysis that starts at the entry level
Top down processing
Construct perceptions drawing on our experience and expectations
Selective attention
Conscious awareness focuses one particular thing
Cocktail party effect
The ability to attend to only one voice among many others
Inattentional blindnes
When a viewer’s attention was directed elsewhere, they missed otherwise obvious objects
Change blindness
When an object changes, but viewers fail to notice
Popout stimuli
Stimuli that draws our eye and demands our attention
Absolute threshold
The minimum stimulation necessary to detect a particular light, sound, pressure, taste or odor 50% of the time
Signal detection theory
Predicts when we will detect weak signals amid background stimulation
Subliminal
Below threshold
Priming
Predisposing one’s experience, expectations, motivation, and alertness
Difference threshold
Minimum difference a person can detect between two stimuli 50% of the time
Weber’s law
For a difference to e perceptible, two stimuli must differ by a constant proportion
Sensory adaptation
Diminished sensitivity as a consequence of constant stimulation
Transduce
Transform
Wavelength
The distance from one wave peak to another
Hue
The color we experience
Intensity
The amount of energy in light waves
Pupil
Small adjustable opening surrounded by the iris
Iris
A colored muscle that adjusts light intake
Lens
Focuses incoming light rays into an image on the retina
Retina
Multi-layered tissue on the eyeballs sensitive surfaces
Sends light energy into neural impulses and forwards those to the brain