unit 5: sensations

expands and contracts to focus objects.
clear protective covering of the eye.
colored aperture which regulates size of pupil.
inside lining of the eye that contains photoreceptors cells.
point of highest concentration of cones and rods.
opening of the eye through which light passes.
Optic Nerve
afferent neural pathway to visual cortex.
Ciliary Muscles
regulates the shape of the lens.
Additive Color
Mixing wavelengths of light increases color.
stated that there were cones for blue,red, & green.
Gate Control Theory
explains the workings of the neural networks for pain.
Place Theory
location in the basiliar membrane makes sound.
Vestibular Sense
how one is able to remain balanced.
Subtractive Coloring
remove wavelengths by mixing colors.
Sensory Adaptation
loss of sensitivity of receptors due to exposure.
Frequency Theory
frequency of vibrations creates sound.
Weber's Law
difference threshold.
vision impairment from having one or no types of cones.
Law of Pragnaz
the tendency to see objects in their simplest form.
filling in the missing parts to create a compete object.
Textual Gradient
the closer the object the greater detail that is seen.
Size Constancy
objects remain their size and shape regardless of the size of proximal image.
Visual Capture
the dominance of vision over the other senses.
Retinal Disparity
the brain process of detecting differences in images to produce depth.
Figure Ground
the process of seeing an object against a background.
Light & Shadow
depth cue related to the intensity of light shown upon an object.
Dichotic Listening
a common test used for analyzing selective attention in subjects.
the ability to detect distance/depth by the amount we look inward.
Relative Motion
distance cue related to speed of passing objects.
Autokinetic Effect
the apparent movement of a dot of light in a completely dark room.
depth cue requiring the use of only one eye.
Perceptual Set
schemas, experiences and contextual clues that change our perception of stimuli.
depth cue related to one object blocking the view of another object.
objects that are close to each other are perceived to be together.
a term in perception which means 'wholeness'.
Phi Phenomenon
apparent movement caused bus switching lights on and off in sequence.
Visual Cliff
a laboratory device for testing depth perception.
Extrasensory Perception
perception occurring apart from sensory input