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This 3 page Class Notes was uploaded by Geovanni Kohler on Wednesday September 9, 2015. The Class Notes belongs to PSYCH 333 at University of Washington taught by Ellen Covey in Fall. Since its upload, it has received 17 views. For similar materials see /class/192408/psych-333-university-of-washington in Psychlogy at University of Washington.
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Date Created: 09/09/15
Psych 333 Test Yourself Study Guide 3 VISUAL SYSTEM 1 What is light How can light be characterized in physical terms 2 What is the difference between white light and colored light 3 What is the difference between mixing wavelengths of light and pigments in terms of what colors we perceive 4 What happens to light when it impinges upon objects in the environment 5 Draw a diagram of the eye and label its main parts 6 Name the two types of photoreceptor cells in the eye What do they have in common How do they differ 7 Only one process in vision actually involves light What is it 8 What parts of the eye are responsible for focusing light on the retina How does this process work 9 What is a visual receptive field 10 What is the fovea 11 What is the blind spot and why do you not see it normally 12 Describe the process of visual transduction starting with light entering the eye and ending with the response of a retinal ganglion cell 13 What is lateral inhibition Why is it important for visual perception 14 What is meant by information processing What types of processing occur in the retina 15 Why does the release of glutamate from photoreceptors cause some bipolar cells to become depolarized and others hyperpolarized 16 Describe what types of stimuli would cause increased activity in a retinal ganglion cell with an oncenter offsurround receptive eld what about a cell with an offcenter onsurround eld 17 What causes nearsightedness myopia What causes farsightedness hyperopia How can these defects be corrected 18 What is the difference between bipolar cells and ganglion cells 19 Which retinal cells provide lateral inhibitory connections 20 How is increased sensitivity due to convergence of photoreceptor inputs related to acuity 21 What is visual acuity How could you measure it experimentally 22 What is an afterimage Why do you see it 23 Describe two ways in which processing in the retina might affect our visual perception 24 Which cells in the retina produce action potentials Which do not 25 What is accommodation How does it occur 26 What is lightadaptation What causes it and why do we need it 27 What is darkadaptation What causes it and why do we need it 28 Why do we sometimes see things in a way that does not directly re ect the physical characteristics of our environment Give an example from the visual system 29 The axons of the retinal ganglion cells form what nerve Where does this information go 30 What brain structures receive input directly from the retina What is the function of each 3 l The lateral geniculate nucleus is a layered structure Describe the way in which inputs to the LGN are segregated according to layer 32 What main classes of information are conveyed through the magnocellular pathways the parvocellular pathways 33 What part of the brain receives the major projection from the lateral geniculate nucleus 34 Describe three different functional classes of neurons found in primary visual cortex 35 What is a cortical module An orientation column An ocular dominance column 36 What is the difference between cortical quotblobsquot and interblob areas 37 What features of the visual stimulus are most important for activating cells in V4 Inferotemporal cortex Area MT 38 Describe at least one way in which experience in uences the development of visual cortex 39 Describe the trichromatic theory and the opponentprocess theory of color vision How would each type of processing contribute to our perception of color 40 How does a population code acrossfiber pattern differ from a speci city labeledline code 41 What is the most common cause of color blindness Why is color blindness more common in males than in females 42 What is meant by color constancy Object constancy 43 What are the main principles or quotlawsquot of perceptual organization according to Gestalt theory 44 What are some cues that would allow you to separate a gure from its background 45 According to feature integration theory what stages of processing are hypothesized to occur What happens during each stage 46 How does feature integration theory differ from the theory of recognition by components 47 What is meant by spatial frequency How are spatial frequency gratings used to study visual perception 48 What are the cues we use to perceive depth in the visual field Which ones could you use if you only had one eye 49 What is meant by stereopsis How does it occur 50 What is apparent stroboscopic movement Why does it occur 51 How could a neural circuit that includes delaylines and coincidence detector cells lead to direction selective responses 52 What is optic ow and why is it important for visual perception