03 - Human Sensory Motor System

Question 1

Technical displays

Answer 1

• 2D screens
• – no stereopsis, no motion parallax
• – virtual cues (perspective, occlusion, shadows, texture gradients, retinal image size)
• head-mounted displays = VR => better results with vision from both eyes

Question 2

Motor control and augmented feedback

Answer 2

• augmented feedback = sensory info that cannot be elaborated w/o external source (trainer/display)
  terminal (after) or concurrent (during)
• effectiveness of feedback
  — simple task => terminal better (guidance hypothesis = dpdcy)
  — complex task => concurrent better

Question 3

Robot-assisted motor learning with different feedbacks

Answer 3

• compare different feedbacks
• – visual = spatial + temporal
• – visual + auditory = spatial + TEMPORAL
• – visual + haptic = SPATIAL + temporal
• multimodal feedback

Question 4

Task difficulty

Answer 4

• challenge point theorem: performance in practice + potential learning benefit vs task difficulty
  adjust to skill level
• nominal task diff = perceptual & motor perf reqts
• conditional task diff = nominal + additional cdt°s
• functional task diff = cdt°l + skill level