Flashcards in Chapter 5 - Vocabulary Deck (49)
The process by which our sensory receptors and nervous system receive and represent stimulus energies from our environments.
The process of organizing and interpreting sensory information enabling us to recognize meaningful objects and events.
Analysis that begins with the sensory receptors and works up to the brains integration of sensory information.
Information processing guided by a higher level mental process, as we construct perceptions drawing on our experiences and expectations.
A condition that after losing or damaging a temporal lobe area, the ability to recognize faces is lost.
A study of relationships between the physical characteristics of stimuli, such as intensity, and our psychological experience of them.
The minimum stimulation needed to detect a particular stimulus 50% of the time.
Signal detection theory
A theory predicting how and when we detect the presence of a faint stimulus amid a background and detection depends partially on a persons experience, expectations, motivations, and level of fatigue.
Below ones absolute threshold for conscious awareness.
The activation often unconsciously, of certain associations, thus predisposing one's perception, memory, or response.
The minimum difference between two stimuli required for detection 50% of the time. We experience the difference threshold as a just noticeable difference.
The principle that, to be perceived as different, two stimuli must differ by a constant minimum percentage.
Diminished sensitivity as a consequence of constant stimulation.
Conversion of one form of energy to another. In sensation, the transforming of stimulus energies, such as sights and sounds, into neural impulses our brain can interperate.
The distance from the peak of one light or sound wave to the peak of the next. Electromagnetic wavelengths vary from the short blips of cosmic rays to the impulses of radio transmission.
The dimension of color that is determined by the wavelength of light; what we know as the color names of blue, green, yellow, and so forth.
The amount of energy in a light or sound wave, which we perceive as brightness or loudness, as determined by the wave's amplitude.
The adjustable opening in the center of the eye through which light enters.
The ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening.
The transparent structure behind the pupil that changes shape to help focus near or far objects on the retina.
The process by which the lens changes shape to focus near or far objects on the retina.
The light-sensitive inner surface of the eye, containing the receptor rods and cones plus layers of neurons that begin the processing of visual information.
The sharpness of vision.
A condition in which closer objects are seen more clearly than faraway objects because faraway objects focus in front of the retina.
A condition in which faraway objects are seen more clearly than near objects because the image of near objects is focused behind the retina.
Retinal receptor cells that detect black, white, and grey; necessary for peripheral and twilight vision, when cones don't respond.
Retinal receptor cells that are concentrated near the center of the retina and function in day-light or well lit conditions. The cones detect fine detail and give rise to color sensations.
The nerve that carries neural impulses from the eye to the brain.
The point at which the optic nerve leaves the eye, creating a blind spot.