TB6 B&B Lecture 1 MCQ; Object recognition

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  • Created on: 26-11-15 14:34

1. What was the double dissassociation finding from Goodale et al (1994) with patient RV and case DF?

  • Case RV (damage to dorsal) could tell the shape of objects apart but could not correctly grasp them. DF (ventral damage) performed at chance at form discrim but could successfully grasp
  • Case RV (damage to ventral) could tell the shape of objects apart but could not correctly grasp them. DF (dorsal damage) performed at chance at form discrim but could successfully grasp
  • Case DF (damage to dorsal) could tell the shape of objects apart but could not correctly grasp them. RV (ventral damage) performed at chance at form discrim but could successfully grasp
  • Both participants performed at chance at the grasping task and correctly in form discrimination
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2. What is apperceptive agnosia?

  • Deficits at a perceptual level. Patients often are better at drawing from memory rather than copying an object's form directly and have preserved colour/brightness perception
  • Deficits at the attribution level, where the percept is given meaning by being linked to previous experience. There is accurate copying from vision, but poor drawing from memory

3. From V1, where does the dorsal stream broadly terminate?

  • Inferior temporal cortex
  • Inferior parietal cortex
  • Posterior parietal cortex
  • Posterior temporal cortex

4. What did Newcombe's (1987) double dissassociation finding show?

  • Neither groups of lesioned pps could perform at control level on both face/object recognition and spatial (maze) tasks
  • Pps with right parietal lobe lesions performed poorly on spatial tasks (maze) and well on face/object recognition, whereas pps with right temporal lobe lesions performed opposite
  • Pps with right parietal lobe lesions could not perform either the spatial or object recognition tasks, whereas the pps with right temporal lobe lesions could
  • Pps with right temporal lobe lesions performed poorly on spatial tasks (maze) and well on face/object recognition, whereas pps with right parietal lobe lesions performed opposite

5. What was the key point made by Goodale and Humphrey (1998) re; organisational principles?

  • The underlying and essential processes behind vision for perception and vision for action are highlighted by their placement in the brain
  • The position of the structures necessary for vision for action and vision for perception is irrelevent to their function

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