CHAPTER 3 Vocab (R-W) Flashcards
The retinal area that, when stimulated, affects the firing of that cell
Receptive field of a visual cell
the neural tissue lining the inside back surface of the eye; it absorbs light, processes images, and sends visual information back tot he brain
retina
A cue to the depth based on the fact that objects within 25 feet project images to slightly different locations on the left and right retinas, so the right and left eyes see slightly different views of the object
Retinal disparity
A drawing that is compatible with two different interpretations that can shift back and forth
Reversible figure
Specialized visual receptors that play a key role in night vision and peripheral vision
Rods
The stimulation of sens organs
Sensation
A gradual decline in sensitivity to prolonged stimulation
Sensory adaptation
A psychophysiological theory proposing that the detection of stimuli involves decision processes as well as sensory processes which are influenced by a variety of factors besides the physical intensity of a stimulus
Signal-detection theory
The perception of controus where none actually exist
Subjective contours
The registration of sensory input without conscious awareness
Subliminal perception
Formation of colors by removing some wavelengths of light, leaving less light than was originally there
Subtractive color mixing
The sensory system for touch
Tactile system
A dividing point between energy levels that do and do not have a detectable effect
Threshold
In form perception, a progression from the whole to the elements
Top-down processing
The theory of color vision holding that the human eye has three types of receptors with differing sensitivities to different wavelengths
Trichromatic theory
The sensory system that responds to gravity and keeps people informed of their body’s location
Vestibular system
An inability to recognize objects
Visual agnosia
The theory holding that groups of auditor nerve fibers fire neural impulses in rapid succession, creating volleys of impulses
Volley principle
The theory stating that the size of a just noticeable difference is a constant proportion of the size of the initial stimulus
Weber’s law
