the dimension of color that is determined by the wavelength of light; what we know as the color names blue, green, and so forth. (p. 125)
change blindness
failing to notice changes in the environment. (p. 119)
vestibular sense
the sense of body movement and position, including the sense of balance. (p. 142)
priming
the activation, often unconsciously, of certain associations, thus predisposing one’s perception, memory, or response. (pp. 121, 275)
accommodation
the process by which the eye’s lens changes shape to focus near or far objects on the retina.(p. 126)
binocular cues
depth cues, such as retinal disparity, that depend on the use of two eyes. (p. 153)
perceptual constancy
perceiving objects as unchanging (having consistent shapes, size, lightness, and color) even as illumination and retinal images change. (p. 156)
iris
a ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening. (p. 126)
pupil
the adjustable opening in the center of the eye through which light enters. (p. 126)
gate-control theory
the theory that the spinal cord contains a neurological “gate” that blocks pain signals or allows them to pass on to the brain. The “gate” is opened by the activity of pain signals traveling up small nerve fibers and is closed by activity in larger fibers
