Download NEU 394 EXAM QUESTIONS AND CORRECT ANSWERS 100% VERIFIED!! and more Exams Advanced Education in PDF only on Docsity!
NEU 394 EXAM QUES 1 00%TION VESRI ANFIED DCORR!! ECT ANSWERS
Inverse Problem - ANSWER brain needs to create 3D representations of the world on tehbasis of 2D inputs
Monocular depth cue - ANSWER requires one eye to perceive depth examples of monocular depth cue - ANSWER relative size and height linear and aerial perspective binocular depth cue - ANSWER requires both eyes to perceive depth metrical depth cue - ANSWER provides information about distance in the thirddimension
examples of metrical depth cue - ANSWER relative size; relative height; texturegradient; familiar size; stereopsis; motion parallax
nonmetrical depth cue - ANSWER gives us relative orderings of occluders and occludedbut not their size or distance
examples of nonmetrical depth cue - ANSWER occlusion and aerial perspective pictorial depth cue vs no pictorial depth cue - ANSWER pictorial depth cues are any infoconveyed to observer of a 2D image that gives the impression of 3D image
relative size - ANSWER comparison of size between items without knowing the absolute
size of either one relative height - ANSWER objects that are higher are further away texture gradient - ANSWER based on geometric fact of same size form smaller, closerspaced images the farther away they get
familiar size - ANSWER knowledge of the typical size of objects aerial perspective - ANSWER based on implicit understanding that light is scattered bythe atmosphere
linear perspective - ANSWER lines that are parallel in 3D world will appear to convergein 2D image as they extend into the distance (vanishing point)
anamorphosis - ANSWER flat image that looks 3D when viewed from correct position occlusion - ANSWER near object can partially occlude another object that is far away motion parallax - ANSWER triangulation cueimages closer to observer move faster across the visual field than images farther away
accommodation - ANSWER triangulation cueprocess bywhich eye changes its focus
convergence - ANSWER as we shift focus from a far to near point moveyour eyes inwards to look at close objects
The Bayesian Approach - ANSWER way of formalizing idea that our perception is acombination of the current stimulus and our knowledge about the conditions of the world why do we see the moon illusion? - ANSWER the moon in the sky seems closer than themoon on the horizon
why do we see the ponzu illusion? - ANSWER linear perspective depth plays a rolemaking two objects hat are teh same size appear to be different sizes
ames room - ANSWER using one eye to get ridof binocular depth, ones visual systembelieves its a normal sized room but creates odd interferences about the size of objects in the trapezoid room detection - ANSWER occurs at level of retina; required to perceive color discrimination - ANSWER we must be able to tell difference between wavelengths appearance - ANSWER we want to assign perceived colors to lights and surfaces in theworld
photopic levels - ANSWER daylight; cones scotopic - ANSWER dimmer; rods response of S cones - ANSWER blue cone; 420 nm response of M cones - ANSWER green cone; 535 nm
response of L cones - ANSWER red cone; 565 nm principle of univariance - ANSWER one photoreceptor cannot make color discriminationbased on wavelength
how to solve univariance problem - ANSWER our visual system uses three differenttypes of cones (S, M, L)
trichromatic theory of color vision - ANSWER color of any light is defined in our visualsystem by the relationships of three numbers, the outputs of three receptor types known to be the three cones metamers - ANSWER mixtures of wavelengths that look identical even if wavelengthsare physically different
illegal color combinations - ANSWER blue and yellow; red and green; black adn white opponent color theory - ANSWER Ewald Hering perception of color depends on output of three mechanisms, each of them based on anopponency between two colors (complementary colors)
hue cancellation - ANSWER an experiment in which two colors are gradually mixedtogether until there is no hint of any of the two
negative afterimage - ANSWER phenomenon of seeing opposite color of the originalstimulus
complementary color afterimage - ANSWER red produces green afterimages; blueproduces yellow afterimages; vice versa
LGN cells' response to different types of cones (cone opponent cells in LGN) - ANSWER
color contrast - ANSWER color is more enhanced when it is near its opponent color examples of color contrast - ANSWER green square looks greener on red backgroundthan on green background
color assimilation - ANSWER two colors bleed into each other, each of them taking onsome of the chromatic qualities of the other
examples of color assimilation - ANSWER brown sphere with green stripes on top willlikely be perceived as green
color constancy - ANSWER tendency of a surface to appear the same oclor under afairly wide range of illuminants
examples of color constancy - ANSWER banana will look yellow in both high and lowluminance
examples of how color perception impacts other perception of other sensory modalities- ANSWER people who drink a purple drink with cranberry flavor reported a grape taste
ways that color can be used in various survival situations - ANSWER notify animals ofdanger
Maxwell's color matching experiment - ANSWER reference color is presented on the left;on the right, observer adjusts mixture of three lights to match the color
additive color mixing - ANSWER taking one wavelength or a set of wavelengths andadding it to another
subtractive color mixing - ANSWER some of the light shining on the surface of two mixedpigments will be subtracted, only the remainder contributes to color
