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18 Cards in this Set

  • Front
  • Back
tough, transparent, protective layer that covers the front of the eye and bends light reays inward through the pupil.
transparent disc-shaped structure being the iris and the puil that changes shape as it focuses on objects at varying distances
layer of tissue that is locared on the inner surface of teh eyeball and contains that sensory receptors for vision
light-sensitive receptor cells in the retina that look like slender cylinders and allow the eye to respond to as few as five photons of light.
light-sensitive receptor cells in the retina that enable humans to see color and fine detail in adequate light but do not function in very dim light.
point in each retina where there are no rods or cones because the cable of ganglion cells is extending through the retinal wall
Blind spot
nerve that carries visual information from each retina to both sides of the brain.
Optic nerve
Three components of color vision
hue= dimension of light that refers to the specific color prceived

Saturation= purity of a color

Brightness= intensity of the light energy
Rods vs. Cones
Rod= receptor cell in the retina that are sensity to light changes

Cone= receptor cells in the retina that enable humans to see fine detail and color in adequate light
The inability to distingquish certain colors from one another
Color blindness
Visual sensation that remains after a stimulus is withdrawn.
Figure-ground= background

Similarity= alike grouped together

Proximity= near grouped together

Continuity= "flow" into pattern

Closure= see completed figures

Prognanz= see best/most correct
Gestalt principles of grouping
Depth cues that can be perceived by one eye alone.
Monocular depth cues
Convergence occurs when the eyes turn inward to focus on nearby objects.

Binocular disparity provides important cue for depth perception. The farther away from the eyes the objects being looked at, the less is the disparity.
Convergence vs. binocular disparity
real motion= perception of motion tied to movements of real objects through space

apparent motion= perceptions of motion that seem to be psychologically constructed in response to various kinds of stimuli
Real vs. apparent motion
E.G. Boring's "Old Woman/Young Woman"
The same drawing can convey such dramtically different perceptions.
False perception or misperception of an actual stimulus in the environment
Whether visual perception occurs in the same parts of the brain no matter what you are looking at.