PSY1101 - Notes - Midterm 2

PSY1101 - Notes - Midterm 2 - Psychology Midterm 2 90...

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90 – Minute cycle Psychology – Midterm 2 PERCEPTION – Chapter 7 Visual Capture: when visual and another sensory information conflict visual data will win (see it to believe it) What is sent from our sensory organs: - Optic nerves: brightness, colour, forms (simple) - Auditory nerves: loudness, pitch, timbre o They must translate into what we ‘hear’ and ‘see’ (depth, movement, recognition) Depth Perception : *Can have several cues coming together all forming our perception of depth - Is somewhat INNATE - Binocular Cues: (require 2 eyes) o Convergence: helps us to perceive depth Eyes turn inward to fixate on a specific point Only works for objects that are relatively close o Retinal Disparity: (Neuromuscular Cue) Difference on 2 retinas allows us to perceive depth (brain can process that disparity and therefore process this as depth) Brain receives two different perceptions from the two eyes and combines them to have a unified view - Monocular Cues: ( require 1 eye) – 3 Types o For farther objects (difference between someone that is 10m away and 100m away) o Accomodation: works for objects only within 2 metres of eyes (close objects only to perceive depth) Close vision: lens is squished Distance vision: lens is stretched o Motion Parallax: Closer objects that are moving more quickly, farther ones moving more slowly Ex. On highway – cars move faster than the buildings behind them Therefore allowing us to perceive depth (closer – faster, farther – slower) Most effective when the objects are similar o Pictorial: Interpostion: Most effective when objects are familiar One object in front of another Gestal Principle (of Closure): allows us to also obtain information from unfamiliar objects o More likely to perceive objects as WHOLE Relative Size: works best when two objects are at the same shape The object that looks bigger, must mean it is closer Ex. Cars on a highway, a car that is closer would look bigger than a car that is farther away from your view The closer the object – the larger the image shown on your retina Linear Perspective: Parallel lines converging is how we perceive depth. Parrallel lines going off into the distance seem to get closer and closer together Train tracks – the closer horizontal line seems like it is smaller than the one that is farther, however in reality they are the same length Texture: (ariel cues) Objects that are more distant from you will have fewer details Ex. The detail of a gravel road will seem much more detailed in texture than the gravel road that is farther away Visual system gives more detail to closer objects Haze: (ariel cues) More distant objects have less detail Because we have to see through atmosphere Shading:
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Psychology – Midterm 2 Creates sense of depth by assuming a light source If light is coming from above, divets and bumps will have opposite shadows/light
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This note was uploaded on 01/17/2010 for the course PSY psy1101 taught by Professor Haddad during the Fall '09 term at University of Ottawa.

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PSY1101 - Notes - Midterm 2 - Psychology Midterm 2 90...

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