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Presentation
Judgments of Speed of Self-Motion: Modeling the Relative Effects of Speed and Altitude Change
Proceedings of the Human Factors and Ergonomics Society Annual Meeting
  • John M. Flach, Wright State University - Main Campus
  • Asad Ali Junaid
  • Rik Warren
Document Type
Conference Proceeding
Publication Date
9-1-2004
Catalog Record
Catalog Record
Abstract

Empirical studies consistently show that judgments of the speed of self-motion are influenced by changes in the altitude of an observer. In general, a given actual speed is judged to be relatively faster from a lower altitude and relatively slower from a higher altitude. Similarly, loss of altitude can be accompanied by a false perception of increasing speed, while increases in altitude can be accompanied by a false perception of loss in speed. The direction of these effects is consistent with the Global Optical Flow Rate (GOFR) Hypothesis. However, the pattern of effects is not proportional to the ratio of velocity to altitude as predicted by the GOFR Hypothesis. An alternative model is presented that predicts additive effect of speed and altitude changes on speed perception.

Comments

Presented at the Human Factors and Ergonomics Society's 48th Annual Meeting, New Orleans, LA, September 20-24, 2004.

DOI
10.1177/154193120404801628
Citation Information
John M. Flach, Asad Ali Junaid and Rik Warren. "Judgments of Speed of Self-Motion: Modeling the Relative Effects of Speed and Altitude Change" Proceedings of the Human Factors and Ergonomics Society Annual Meeting Vol. 48 Iss. 16 (2004) p. 1923 - 1927
Available at: http://works.bepress.com/john_flach/64/