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Top down processing
occurs when prior knowledge, and expectations guide what is perceived.
Bottom up processing:
construction a whole stimulus or concept from bits of raw sensory information
Selective attention
focus on ONE particular event or task
divided attention
involves paying attention to several stimuli/tasks at once
self proclaimed multi taskers perform worse on cognitive test (distracting driving)
inattention blindness:
a failure to notice clearly visible events or objects because attention is directed elsewhere
amplitude
height of the wave
wavelength
distance between waves
the eye: sclera
white outer layer of the eye
the eye: cornea
clear layer that covers the front of the eye
the eye: pupil
regulates amount of light let into the eye
the eye: iris
round muscle that adjusts the size of the pupil
the eye: lens
clear structure that focuses light onto the back of eye.
Myopia (nearsighted)
focus point falls in front of retina
lens and/ or cornea bends light too much or eyeball too long
hyperopia (farsightedness)
ideal focus point falls behind the retina
cornea/ lens too rigid and fails to bend light enough or eyeball not to long enough
retina cells: cones
concentrated on fovea to produce high-detail, colour vision at our point of visual focus
retina cells: rods
on outer regions of retina provide peripheral vision and are specialized for low light conditions
retina cells: dark adaptation
the process by which rods and cones gain sensitivity to low light levels
bipolar neurons
synapse onto photoreceptors
ganglion cells
transmits signals from bipolar neurone to brain
optic nerve
axon tracts from ganglion cells leading to brain
optic disc
area on retina lacking rods and cones
rod/cones
interpreter, ntranslating energy into neutron
Note
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