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Chapter 7 Motion Perception


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What is smooth pursuit of eye movements?
-follow objects smoothly
What is the comparator?
when eye muscles change and image on retina changes a signal is sent to comparator which sends this info to the visual cortex
Which cranial nerves control eye muscles?
III, IV, and VI
What are saccades?
rapid changes in eye position to change object foveation
What is saccade suppression?
eyes shut off visual input so that we do not see blury images during saccades
Objects are streaming __________ as we move forward
Objects are streaming ___________ as we move backwards
What is biological motion?
pattern of movement of living beings
What is TTC?
-estimate the time to collision
-use to avoid getting hit by objects and trying to know what time something will come in contact with
What is tau (t)?
retinal image size/rate of expansion in retinal image size
What is akinetopsia?
inability to perceive motion
What is the motion aftereffect?
stare at something, when it stops, appears to move in opposite direction
What is apparent motion?
when things are positioned closed together with different positions it appears as motion
What is interocular transfer?
cortical neurons receive information from both eyes allowing us to see something that was only seen in one eye
What is second order motion?
changes in contrast or texture but not luminance

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