Dynamics of Two-Dimensional Eye-Head Tracking.
Abstract
This research examines two-dimensional target tracking where eye and/or head motion is used for control. Particular attention was devoted to a tracking method involving Electrooculography (EOG) and to two tracking schemes using a Honeywell remote oculometer, one with and one without a visual feedback display. Each tracking method involves eye-head coordination, but in different ways. During the Summer of 1979, experimental work was carried out at the tracking laboratory of the Aerospace Medical Research Lab. The tests, conducted with fifteen human subjects, involved tracking of targets in two-dimensional quasi-random (sum-of-sines) motion. All tests were conducted at three different target amplitude (envelope) levels in order to study possible nonlinear effects. From the recorded data, the frequency response spectrum and a statistical evaluation of the tracking performance were obtained for each tracking run. These data, in turn, were averaged in appropriate groups. For each tracking method, average frequency responses--in the describing function sense--are presented for each of three different levels of maximum target field sizes. The relevant overall dynamic properties of the three tracking methods are represented in the compact form of describing function models whose parameters were identified from the averaged frequency responses. In terms of these parameters, the three methods are compared and the effect of targeted field size discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 15, 1981
- Accession Number
- ADA102369
Entities
People
- Andrew U. Meyer
Organizations
- New Jersey Institute of Technology