Shared Flashcard Set

Details

Sensation
Flashcards?
24
Psychology
12th Grade
09/27/2009

Additional Psychology Flashcards

 


 

Cards

Term
Sensation
Definition
The process by which sensory systems and the nervous system receive stimuli from the environment.
Term
Bottom-Up Processing
Definition
Information processing that analyzes the raw stimuli entering through your many sensory systems.
Term
Perception
Definition
The process of organizing and interpreting incoming sensory information.
Term
Top-Down Processing
Definition
Information Processing that draws on our experiences and expectations to interpret incoming sensations.
Term
Absolute Threshold
Definition
The minimum amount of stimulation needed to detect a particular stimulus.
Term
Difference Threshold
Definition
The minimum difference to detect that two stimuli are not the same.
Term
Signal Detection Theory
Definition

Predicts how and when we detect the prexsence ofa faint stimulus.

3 variables: Stimulus, Environmental, Organismic

Term
Sensory Adaptation
Definition
Diminished sensitivity to a constant and unchanging stimulation
Term
Selective Attention
Definition
Focusing conscious awareness on a particular stimulus to the exclusion of others.
Term
Cornea
Definition
Clear, curved bulge on the front of the eye that bends light rays to begin focusing them.
Term
Iris
Definition
A ring of muscle tissue that forms the colored portion of the eye and regulates the size of the pupil.
Term
Pupil
Definition
The adjustable opening in the center of the iris, which controls the amount of light entering the eye.
Term
Lens
Definition
Transparent structure behind the pupil that changes shape to focus images on the retina.
Term
Retina
Definition
Light sensitive surface at the back of the eyeball.
Term
Receptor Cells
Definition
Specialized cells in every sensory system of the body that can turn other different kinds of energy into action potentials (neural impulses) that the brain can process.
Term
Rods
Definition
Visual receptor cells located in the retina that can detect only black, white, and gray
Term
Cones
Definition
Visual receptor cells located in the retina that can detect sharp details and color.
Term
Optic Nerve
Definition
The Nerve that carries visual information from the eye to the occipital lobes of the brain.
Term
Blind Spot
Definition
The point at which the optic nerve travels through the retina to exit the eye caused by a lack of rods and cones at this point.
Term
Trichromatic (three-color) theory
Definition
A theory of color vision that says cones are sensitive to red, green or blue light- the three colors that combine to create millions of color combinations.
Term
Opponent Process Theory
Definition
A theory of color vision that says color is processed by cones organized in opponent pairs (red-green, yellow-blue, and black-white)
Term
Cochlea
Definition
The major organ of hearing, sound waves changed to neural impulses
Term
Kinesthetic Sense
Definition
System that sense position and movement of individual body parts
Supporting users have an ad free experience!