COGS 101A Lecture Notes - Attentional Blink, Inattentional Blindness, Fusiform Face Area
● Distance and Depth
○ Oculomotor
○ Monocular
■ Pictorial
■ Motion Parallax
○ Binocular
■ Cues where you need both eyes
■ Stereopsis
● Perception of depth that results from having 2 eyes
■ Depth Cues
● Corresponding retinal points
○ Points on retina that would overlap if eyes were
superimposed
● Non-corresponding points
○ Point that would not overlap if the eyes were superimposed
● Horopter
○ Plane in space that is semicircle extending from your
fixation that is equal distance from us and corresponding
points on retina
● Disparity
○ Degree to which and image deviates from falling on
corresponding points
○ Zero disparity
■ Object falls on horopter
○ Gives us info about the distance of objects based on where
a point should be on the horopter of the other retina
○ Crossed disparity
■ When things are closer
○ Uncrossed Horopter
■ When things are further
■ Correspondence problem
● How do we know what light in the retina corresponds to a specific
object?
● Example: 3D movies and images
● Visual Attention
○ Capacity limitations
■ Amount of info coming down the optic nerve (10^8 ~10^9) capable of fully
processing
○ Selective attention
■ Processing input preferentially is the natural strategy for dealing with this
bottleneck
■ Visual Scanning
● Saccades
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Document Summary
Perception of depth that results from having 2 eyes. Points on retina that would overlap if eyes were superimposed. Point that would not overlap if the eyes were superimposed. Plane in space that is semicircle extending from your fixation that is equal distance from us and corresponding points on retina. Degree to which and image deviates from falling on corresponding points. Gives us info about the distance of objects based on where a point should be on the horopter of the other retina. Amount of info coming down the optic nerve (10^8 ~10^9) capable of fully processing. Processing input preferentially is the natural strategy for dealing with this bottleneck. Tracking where you"re eyes are moving across an image. Scanning involves overt attention (contrasted with covert attention) Overt= over attention; covert= when you"re not looking at something. Can help us to choose what we attend to. Properties of stimulus grab our attention without our decision.
