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Terms in this set (21)
the minimum stimulations needed to detect a particular stimulus 50 percent of the time.
include location - the point at which the optic nerve leaves the eye; this part of the retina is "blind" because it has no receptor cells.
Bottom up processing
analysis that begins with the sensory receptors and works up to the brain's integration of sensory information.
retinal receptor cells that are concentrated near the center of the retina; in daylight or well-light conditions, cones can detect fine detail and give rise to color sensations.
the ability to see objects in three dimensions, although the images that strike the retina are two dimensional, allows us to judge distance.
Extra sensory perception
the controversial claim that perception can occur apart from sensory input, such as through telepathy, clairvoyance, and precognition.
the organization of the visual field into objects that stand out from their surroundings.
a social interaction in which one person responds to a suggestion by another person that certain perceptions, feelings, thoughts, or behaviors will spontaneously occur
the system for sensing the position and movement of individual body parts.
a transparent structure behind the iris that focuses the light rays into an image on the eye's inner surface (the retina).
the nerve that carries neural impulses from the eye to the brain
the processing of many aspects of a problem or scene at the same time; the brain's natural mode of information processing for many functions, including vision.
the process by which our brain organizes and interprets sensory information, transforming it into meaningful objects and events.
(based on assumptions and expectations) - a mental predisposition to perceive one things and not another.
the small opening that controls the amount of light entering the eye.
the light sensitive inner surface of the eye; contains the receptor rods and cones plus layers of neurons that begin the processing of visual information.
Sensation (bottom up)
the process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment.
read in textbook - reduced sensitivity in response to constant stimulation.
the principle the one sense may influence another, as when the smell of food influences its taste.
below our absolute threshold for conscious awareness.
the sense of body movement and position, including the sense of balance.
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