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Description: My notes on the visual perception system for psychology
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The Structure of the Eye
Cornea:
Transparent
Convex-shaped
Protects eye
Focus light ray onto the retina
Aqueous Humour:
Maintains shape of eye
Provides nutrients and O2
Carries waste away
Pupil:
Opening in Iris (black)
Iris:
Ring of muscles (coloured)
Changes size of pupil to regulate amount of light entering eye
Dim light (pupil expands) to allow more light to enter eye
Bright light (pupil contracts) to restrict amount of light entering eye
Lens:
Transparent
Flexible
Convex structure
Focuses light onto retina
Lens shape changes when distance of the object being viewed changes
Ciliary Muscles:
Attached to each end of lens
Contact and relax enabling lens to automatically bulge (muscles contract) to focus near objects
onto retina, and flatten (muscles relax) to focus distant objects onto retina
...
Straight behind the eye
Blind Spot:
Optic nerve interrupts the retina
...
Structures include:
o Eye
o Receptors and Photoreceptors
o Nerve pathways
o Visual cortex
Occurs in two phases:
o Visual sensation (sensory perspective)
o Visual perception (physical perspective)
Visual Sensations
Process that enables us to receive light from the environment and convert it into a form that
the brain can interpret
...
o Is both a physiological and sensory process
...
Example:
o Allows us to recognise the face in the mirror
o Enables you to evaluate whether we look happy or sad
Is both physiological and psychological
Both physiological and psychological process are involves in us assigning meaning and
organisation to visual stimuli
Description: My notes on the visual perception system for psychology