Sensation And Perception Book Summary Exam 1

Selective Attention {Ans: choosing to focus on one aspect of a situation while ignoring other stimuli.}Photoreceptor {Ans: cells that transduce light waves into neural messages (rods & cones).}Proximity {Ans: Gestalt - things that are physically close to one another belong together}Sensory Adaptation {Ans: The reduced sensitivity to a stimulus that does not change}Trichromatic Theory (Young-Helmholtz theory) {Ans: Theory of color vision that states that the perception of all colors can be achieved by of a combination of three colors of light: red, green, and blue.}Ganglion Cell {Ans: A type of retinal cell that receives information from a bipolar cell and whose axons combine to create the optic nerve.}Bottom-Up Processing {Ans: sensation}Closure {Ans: Gestalt - the tendency to complete figures that are incomplete}Monocular Cue {Ans: A method for determining depth and distance that requires the use of only one eye.}Vestibular Sense {Ans: balance and equilibrium. Transduction occurs in the semicircular canals.}Weber's Law {Ans: more powerful stimulus requires more change for people to notice the difference}Outer Ear {Ans: The external region of the ear made up of the pinna and the auditory canal.}Amplitude {Ans: wave height - determines loudness