Comprehensive oculomotor behavioral response assessment system

US10463249B1 · kind B1 · utility

Assignee

• United States of America as represented by the Administrator of NASA · US

Inventors

• Leland S. Stone · San Francisco, US
• Dorion Bryce Liston · Boulder Creek, US

Key dates

• Filing date: Aug 14, 2017
• Grant date: Nov 5, 2019
• Expiry date: Aug 14, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B3/032
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An eye movement-based methodology and assessment tool may be used to quantify many aspects of human dynamic visual processing using a relatively simple and short oculomotor task, noninvasive video-based eye tracking, and validated oculometric analysis techniques. By examining the eye movement responses to a task including a radially-organized appropriately randomized sequence of Rashbass-like step-ramp pursuit-tracking trials, distinct performance measurements may be generated that may be associated with, for example, pursuit initiation (e.g., latency and open-loop pursuit acceleration), steady-state tracking (e.g., gain, catch-up saccade amplitude, and the proportion of the steady-state response consisting of smooth movement), direction tuning (e.g., oblique effect amplitude, horizontal-vertical asymmetry, and direction noise), and speed tuning (e.g., speed responsiveness and noise). This quantitative approach may provide fast and results (e.g., a multi-dimensional set of oculometrics and a single scalar impairment index) that can be interpreted by one without a high degree of scientific sophistication or extensive training.