PEDS203 Lecture : Chapter 3 - Sensory Contributions To Skilled Performance
Document Summary
Oct 11 chapter 3: sensory contributions to skilled performance y use of feedback and error detection/correction to maintain movement goal. A closed-loop control system y 4 elements y driven from periphery y slow controlled, deliberate movements y continuous, long duration skills y flexibility in movement control. 2 vision systems y focal vision (what) conscious object identification (center of the visual field) y ambient vision (where/how) body orientation in the environment, movement control (entire visual field) Patla and goodale y had a patient called df visual agnosia carbon monoxide poisoning ( junction of occipital and y ability to step over the obstacle remained intact (control group) temporal lobes) Obstacles with different heights y task: verbally provide obstacle height, estimate by raising limb from standing nearby, walking and stepping over the obstacle. Focal vision and movement control y object id via info-processing stages y expert performers and quiet eye (longer fixation on targets prior to movement onset) .