CHAPTER 8 - Perceiving Motion Flashcards
Describe five different functions of motion perception
Wha is an event? What is the evidence that motion helps determine the location of event boundaries? What is the relation between events and our ability to predict what is going to happen next?
Describe four different situations that can result in motion perception. Which of these situations involves real motion, and which involve illusion of motion?
What is the evidence for similar neural responding to real motion and apparent motion?
Describe Gibson’s ecological approach to motion perception. What is the advantage of this approach? (Explain how the ecological approach explains the situations in Figure 8.8)
Describe how corollary discharge theory explains movement perception observed in Figures 8.8a and 8.8b
Describe the operation of the neural circuit the creates the Reichardt detector. Be sure youn understand why the circuit leads to firing to movement in one direction, but no firing to movement in the opposite direction
What is the evidence that the MT cortex is specialized for processing movement? Describe the series of experiments that used moving dots as stimuli and (a) recorded from neurons in the MT cortex, (b) lesioned the MT cortex, and (c) stimulated neurons in the MT cortex. What do the results of these experiments enable us to conclude about the role of the MT cortex in motion perception?
Describe the aperture problem - why the response of individual directionally selective neurons does not provide sufficient information to indicate the direction of motion. Also describe two ways that the brain might solve the aperture problem
Describe experiments on apparent motion of a person’s arm. How do the results differ for slow and fast presentations of the stimuli? How is the brain activated by slow and fast presentations?
What is biological motion, and how has it been studied using point-light displays?
Describe the experiments that have shown that an area in the superior temporal sulcus (STS) is specialized for perceiving biological motion
What is implied motion? Representational momentum? Describe behavioural evidence demonstrating representational momentum, physiological experiments that investigated how the brain responds to implied motion stimuli, and the experiment that used photographs to generate a motion aftereffect
Describe how experiments with young animals and infants have been used to determine the origins of biological motion perception. What is the evidence that there may be two mechanisms of early biological motion perception?
