Chapter 7 Motion Perception
Terms
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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
- outward
- Objects are streaming ___________ as we move backwards
- inward
- 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