Journal
EXPERIMENTAL BRAIN RESEARCH
Volume 193, Issue 3, Pages 429-436Publisher
SPRINGER
DOI: 10.1007/s00221-008-1640-1
Keywords
Locomotion; Gait; Walking; Psychophysics; Distance perception; Time perception
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Funding
- Howard Hughes Medical Institute
- Swarthmore College Faculty Research Grant
- Lang Sabbatical Award
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Two experiments measured the human ability to reproduce locomotor distances of 4.6-100 m without visual feedback and compared distance production with time production. Subjects were not permitted to count steps. It was found that the precision of human odometry follows Weber's law that variability is proportional to distance. The coefficients of variation for distance production were much lower than those measured for time production for similar durations. Gait parameters recorded during the task (average step length and step frequency) were found to be even less variable suggesting that step integration could be the basis for non-visual human odometry.
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