Chat with AIExam 8: Perceiving Motion
The real world contains instances of continuous motion that somehow are divided up into meaningful units. The point in time when one unit ends and another begins is referred to as the _____.
(37) 
VerifiedC
The _____ signal is sent to other areas of the brain relaying the message that a signal has been sent from the motor cortex to the eye muscles. It is analogous to using the "cc" (copy) function in an email.
(41) VerifiedD
Describe the case of the woman with akinetopsia. What does this case tell us about the importance of motion perception?
(35) VerifiedPerhaps the most dramatic way to illustrate the importance of motion perception to daily life (and survival) comes from case studies of individuals who, through disease or trauma, suffer from damage to parts of the brain responsible for perceiving and understanding movement. When this happens, a person is said to suffer from a condition called akinetopsia or "motion blindness," where motion is either very difficult or impossible to perceive. The most famous and well-studied case of akinetopsia is that of a 43-year-old woman known as L.M. (Zihl et al., 1983, 1991). Without the ability to perceive motion following a stroke,
L.M. was unable to successfully complete activities as simple as pouring a cup of tea. As she put it, "the fluid appeared to be frozen, like a glacier," and without the ability to perceive the tea rising in the cup, she had trouble knowing when to stop pouring. Her condition caused other, more serious problems as well. It was dif?cult for her to follow dialogue because she couldn't see the motions of a speaker's face and mouth, and people suddenly appeared or disappeared because she couldn't see them approaching or leaving. Crossing the street presented serious problems because at ?rst a car might seem far away, but then suddenly, without warning, it would appear very near. Thus, her disability was not just a social inconvenience but enough of a threat to the woman's well-being that she rarely ventured outside into the world of moving - and sometimes dangerous - objects.
Review the evidence for the physiological basis of perceiving biological motion.
(36) In an apparent motion demonstration, two pictures are used. In one picture, a person's fist is located behind his head; in the other, the person's fist is located in front of their face at the same height. When slowly alternating between these pictures (less the five times a second), what apparent motion would result
(33) In one study, Zacks et al. (2009) recorded someone making a sandwich and asked participants to press a button when they thought one action was complete. The results of the study indicated that _____ were indicative of the end of an action.
(35) In an apparent motion demonstration, two pictures are used. In one picture, a fist is located behind a board; in the other, the fist is located in front of the board at the same height. When rapidly alternating between these pictures, what apparent motion would result
(27) Tom is watching Terri walk across the room. According to Gibson, Tom perceives Terri _____.
(36) Kourtzi and Kanwisher (2000) used fMRIs to show that "implied motion" stimuli cause _____.
(37) Describe Francesca Simion's work with biological motion in newborn infants.
(39) Our ability to perceive movement when reading "message boards" that are used in advertising is based on _____.
(38) As Dore runs through the park, the flow signals that he is moving and not the environment. Gibson calls this _____.
(45) In the pooling solution to the aperture problem, MT neurons receive signals from a number of neurons in the _____ and then combine these signals to determine the actual direction of motion.
(39) The patient L.M. (studied by Zihl, et al.), who had cortical lesions that affected her motion perception, experienced
(40) In addition to describing movement detection in terms of the environment, researchers have proposed different ways to detect movement from a physiological perspective. The Reichardt detector is one solution. Which of the following is the greatest weakness of the Reichardt detector
(31) In monkeys, real-motion neurons have been located in _____.
(42) Which of the following is true about the corollary discharge theory
(31) 
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