Exam 3 Psych 230 Unit 12 – UIUC
Questions and Answers.
what parts of fovea see the motion? - Answer motion thresholds are a function of what
parts of the retinae are seeing the motion. We have rather poor motion thresholds. there are
simply some stimulus that are too fast or too slow for us to make sense of
real motion - Answer motion in the world created by continual change in the position of an
object relative to some frame of reference
apparent motion - Answer the appearance of real motion from a sequence of still images
correspondence problem - Answer how the visual system know if an object seen at time 1 is
the same object at time 2
induced motion - Answer an illusion whereby one moving object may cause another object
to look a if it is moving
motion detection in the retinae - Answer The retina plays an important roll in early detection
of motion; some types of amacrine cells in the retina are sensitive to motion. thus, the
beginnings of analyzing motion occur quite early in the human retinae. the beginning of the M
pathway, which codes for motion in V1 and along the dorsal stream of vision. The P pathway
also contributes to motion perception, as we see moving objects in color.
Reichardt detector - Answer neural circuits that enable the determination of direction and
speed of motion by delaying input from one receptive field, to determine speed, to match the
input of another receptive field, to determine direction
Collary Discharge Theory - Answer the theory that the feedback we get from our eye
muscles as our eyes track an object is important ti the perception of motion
eye movements - Answer we track objects that are moving with our eyes. Vergence refers to
eye movements that cause our eyes to resolve a particular object or bring it in to focus
Questions and Answers.
what parts of fovea see the motion? - Answer motion thresholds are a function of what
parts of the retinae are seeing the motion. We have rather poor motion thresholds. there are
simply some stimulus that are too fast or too slow for us to make sense of
real motion - Answer motion in the world created by continual change in the position of an
object relative to some frame of reference
apparent motion - Answer the appearance of real motion from a sequence of still images
correspondence problem - Answer how the visual system know if an object seen at time 1 is
the same object at time 2
induced motion - Answer an illusion whereby one moving object may cause another object
to look a if it is moving
motion detection in the retinae - Answer The retina plays an important roll in early detection
of motion; some types of amacrine cells in the retina are sensitive to motion. thus, the
beginnings of analyzing motion occur quite early in the human retinae. the beginning of the M
pathway, which codes for motion in V1 and along the dorsal stream of vision. The P pathway
also contributes to motion perception, as we see moving objects in color.
Reichardt detector - Answer neural circuits that enable the determination of direction and
speed of motion by delaying input from one receptive field, to determine speed, to match the
input of another receptive field, to determine direction
Collary Discharge Theory - Answer the theory that the feedback we get from our eye
muscles as our eyes track an object is important ti the perception of motion
eye movements - Answer we track objects that are moving with our eyes. Vergence refers to
eye movements that cause our eyes to resolve a particular object or bring it in to focus
