Sensation & Perception Crossword

the minimum difference between two stimuli required for detection 50 percent of the time. we experience the difference threshold as just noticeable difference.
, the principle that, to be perceived as different, two stimuli must differ by constant minimum percentage (rather than a constant amount).
diminished sensitivity as a consequences of constant stimulation
decreasing responsiveness with repeated stimulation. as infants gain familiarity with repeated exposure to a visual stimulus, their interest wanes and they look away sooner
the transparent structure behind the pupil that changes shape to help focus images on the retina
the adjustable opening in the center of the eye through which light enters
a ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening
your eye's clear, protective outer layer
the light-sensitivity inner surface of the eye, containing the receptors rods and cones plus layers of neurons that begin the processing of visual informatio
the central focal point in the retina, around which the eye's cones cluster
the nerve that carries neural impulses from the eye to the brain
the point at which the optic nerve leaves the eye, creating a "blind" spot because no receptor cells are located there