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Sensation

the activation of receptors in the various sense organs.

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just noticeable difference

the \n smallest difference between two stimuli that is detectable 50 percent of the time

The smallest amount of energy needed for a person to consciously detect a \n stimulus 50 percent of the time it is present is called

absolute threshold

Subliminal Perception

The process by why subliminal stimuli act upon the unconscious mind, \n influencing \n behavior is called

habituation

is the tendency of the brain to stop attending \n to constant, unchanging information.

sensory adaptation

The tendency of sensory receptor cells to become less responsive to a stimulus \n that is unchanging is

Saturation

This refers to the purity of the color people see and it is called

Cornea

clear membrane that covers the surface of the eye; \n protects the eye, and is the structure that focuses most of the light coming into the \n eye

Lens

clear structure behind the iris, \n suspended by muscles; finishes the focusing process begun by the cornea

Cones

The visual sensory receptors found at the back of the retina, responsible for \n color vision and sharpness of vision are called the

light adaptation

The recovery of the eye’s sensitivity to visual stimuli in light after exposure to \n darkness is called

Palinopsia

The images that occur when a visual sensation persists for a brief time even \n after the original stimulus is removed are called

eardrum

The thin section of skin that tightly covers the opening into the middle part of \n the ear, just like a drum skin covers the opening in a drum is called the

Auditory Nerve

The bundle of axons from the hair cells in the inner ear; receives neural \n message from the organ of Corti in the

Gustation

The term for the sensation of a taste is called

olfaction

The sense of smell

olfactory bulbs

The areas of the brain located just above the sinus cavity and just below the frontal lobes that receive information from the olfactory receptor cells are called

somesthetic

The body senses consisting of the skin senses, the kinesthetic sense, and the vestibular senses are called _________________ senses.

kinesthetic

The sense of the location of body parts in relation to the ground and each other is called the ____________________ sense.

perception

the method by which the sensations \n experienced at any given moment are interpreted and organized in some \n meaningful \n fashion.

Figure ground

A Gestalt principle known as __________________________ ____________ \n is the tendency to perceive objects, or figures, as existing on a background

Proximity

The Gestalt principle of ___________________ is the tendency to perceive \n objects that are close to each other as part of the same grouping

closure

The Gestalt principle of ___________________ is the tendency to complete figures that are incomplete.

depth perception

The ability to perceive the world in three dimensions is known as

monocular

cues for perceiving depth require one eye only.

binocular

cues for perceiving depth require both eyes.

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perceptual set

the tendency to perceive things a certain way because previous experiences or expectations influence those perceptions.

extrasensory perception

is the claim of perception that occurs without the use of normal sensory channels such as sight, hearing, touch, taste, or smell.

parapsychology

he study of ESP, ghosts, and other subjects that do not normally fall into the realm of ordinary psychology is called ____________________.