A visual receptor most sensitive to the violet-purple wave lengths; very sensitive for night vision
Rod
Light as it originates from the sun or a bulb before it is broken into different frequencies
White Light
Part of the eye that focuses an object on the back of the eye
Lens
The back of the eye which contains millions of receptors for light
Retina
How high or low a sound is
Pitch
Bundle of nerves carrying sound to the brain
Auditory Nerve
Piece of skin stretched over the entrance to the ear; vibrates to sound
Eardrum
Tiny hairs that act as receptor cells for hearing and sense of smell
Cilia
Chemical receptors on the tongue that decode molecules of food or drink to identify them
Taste Receptors
The ability to percieve an object as the same color regardless of the environment
Color Constancy
Depth perception based on how rough or smooth objects appear
Visual Texture
The ability to see objects in space
Depth Perception
The process of filling in the missing details of what is viewed
Closure
A perceptual cue in which we group together things that are near one another
Proximity
An allusion in which the same object is seen as two alternate figures
Reversible Figure
The process of assembling and organizing sensory information to make it meaningful
Perception
Visual receptor that responds during daylight; receives color
Cone
Sense of smell
Olfaction
Sense of hearing
Audition
Measure of how loud sound is
Decibels
Units that receive odor molecules and communicate their nature to the brain
Olfactory Bulbs
A perceptual cue in which we group like things together
Similarity
The human visual network keeps brightness constant as an object is moved to various environments
Brightness constancy
Two pictures in which one line seems longer than the other but really isn't
Muller-lyer Illusion
Stimulation presented below the level of consciousness
Subliminal Perception
A large table with plexiglas, used to demonstrate depth perception in small children
Visual Cliff
Odor chemicals that communicate a message
Pheromones
Organized whole, shape, or form
Gestalt
The complexity of a sound
Timbre
The nerve receptors in the skin that respond to pressure, temperature, or pain
Cutaneous Receptors
An inaccurate perception
Illusion
The ability to retain the size of an object regardless of where it is located
Size Constancy
The ability to keep objects in the environment steady
Space Constancy
The process of receiving information from the environment
Sensation
The opening in the eye
Pupil
The firing of the cones not used after viewing something steadily in order to bring the visual system back in balance
Afterimage
How loud a sound is
Intensity
Snail shaped part of the ear, filled with fluid and small hairs that vibrate to incoming sound
Cochlea
The difference between the image provided by each eye
Binocular Disparity
The clear outer covering of the eye behind which is a fluid
Cornea
Portion of the retina through which the optic nerve exits and where there are no receptors for light waves
Blind Spot
A colored circular muscle that opens and closes, forming larger and smaller circles to control the amount of light getting into the eye
Iris
Inability to perceive certain colors
Color Blindness