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47 Cards in this Set

  • Front
  • Back
absolute threshold
the level of sensory stimulation necessary for sensation to occur
the gradual loss of attenttion to unneeded or unwanted sensory information
process of recieving information from the enviornment
process of assembling and organizing sensory information to make it meaningful
white light
light as it originates from the sun or a bulb before it is broken into different frequencies
the clear outer covering of the eye, behind which is a fluid
a colored circular muscle that opens and closes, forming larger and smaller circle to control the amount of light getting into the eye
the part of the eye that focuses an image on the retina
the opening in the eye; controls how much light gets in
the back of the eye, which contains millions of receptors for light
blind spot
the portion of the retina through which the optic nerve exits and where there are no receptors for light waves
a visual receptor most sensitive to the violet purple wavelengths; very sensitive for night vision; sees only black and white
a visual receptor that responds during daylight sees color
color blindness
inability to percieve certain colors, such as red and green( can see blue and yellow)
image that remains afte stimulation of the retina has ended. Cones not used fire to bring the visual system back in balance
sublimal perception
stimulation presented below the level of cosciousness
sense of hearing
how high or low a sound is
the complexity of a sound
how loud a song is
a measure of how loud a sound is(its intensity)
a piece of skin stretched over the entrance to the ear; vibrates to sounds
a snail shaped part of the ear, filled with fluid and small hairs that vibrate to incoming sound
hair cells
receptor cells for hearing found in the cochlea
hairlike extensions on cells
auditory nerve
bundle of nerves carrying sound to the brain
cutaneous receptors
nerve receptors in the skin that respond to pressure, temperature, or pain
the sense of smell
oflactory bulbs
recieve information from cilia in the nose and sen this information to the brain
odor chemicals that an animal sends out to attract a possible partner
taste receptors
chemical receptors on the tongue that decode molecules of food or drink to identify them; 4 tpes- sweet sour, bitter, and salt
size constancy
tha ability to retain size of an object regardless of where it is located
color constancy
ability to percieve an object as the same color regardless of the enviornment
brightness constancy
ability to keep an objects brightness constant as the object is moved to carious evironments
shape constancy
ability to percieve an object as having the same shape regardless of the angle at which it is seen
space constancy
ability to keep objects in the environment steady be percieving either ourselves or outside objects as moving
depth perception
ability to see the relation of objects in space
visual cliff
an apparatus used to strate depth perception
retinal disparity
difference between the images provided by the two retinas. When the images are broght together in the brain, they provide a sense of depth
texture gradient
how rough or smooth objects appear; used in depth perception
an organized whole, shape or form
a perceptual cue that involves grouping like things together
a perceptual cue that involves grouping together things that are near one another
the process of filling in the missing details of what is viewed
inaccurate perceptions
muller lyer illusion
illusion which one line in apicture with two equal length lines seem longer
reversible figure
illusion in which the same object is seen as two alternating figures- first one , then the other