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 Calendar ColloquiaCognitive CritiqueReading Groups |
Spring 2008 Colloquia
4:00-5:30
January 24
Herb Pick, Child Development
"Optical Flow in the Calibration and Regulation of Locomotion"
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We have been concerned with how optical flow information guides the speed and extent of locomotion. While one might suppose that a comfortable rate of walking is determined by biomechanical factors affecting work and effort, it can be biased by optical flow stimulation. Moreover, the speed of locomotion at which the transition between walking and running occurs is also affected by optical flow information. Exposure to a prolonged (e.g. 15 minutes) discrepancy between stepping rate and rate of progressing through the world as specified by optical flow results in a recalibration amount of stepping required to reach a previously viewed target. Similar results have been obtained when observers are exposed to a discrepancy between rate of stepping in place and rate of turning through the environment.
- Mohler B J, et al., Visual motion influences locomotion in a treadmill virtual environment
download 557kb pdf
- Mohler B J, et al., Visual motion affects speed of gait transitions anf free walking speed
download 128kb pdf