Age-related changes in perception of movement in driving scenes

Lacherez, Philippe, Turner, Laura, Lester, Robert, Burns, Zoe, & Wood, Joanne M. (2014) Age-related changes in perception of movement in driving scenes. Ophthalmic and Physiological Optics, 34(4), pp. 445-451.

View at publisher

Abstract

Purpose

Age-related changes in motion sensitivity have been found to relate to reductions in various indices of driving performance and safety. The aim of this study was to investigate the basis of this relationship in terms of determining which aspects of motion perception are most relevant to driving.

Methods

Participants included 61 regular drivers (age range 22–87 years). Visual performance was measured binocularly. Measures included visual acuity, contrast sensitivity and motion sensitivity assessed using four different approaches: (1) threshold minimum drift rate for a drifting Gabor patch, (2) Dmin from a random dot display, (3) threshold coherence from a random dot display, and (4) threshold drift rate for a second-order (contrast modulated) sinusoidal grating. Participants then completed the Hazard Perception Test (HPT) in which they were required to identify moving hazards in videos of real driving scenes, and also a Direction of Heading task (DOH) in which they identified deviations from normal lane keeping in brief videos of driving filmed from the interior of a vehicle.

Results

In bivariate correlation analyses, all motion sensitivity measures significantly declined with age. Motion coherence thresholds, and minimum drift rate threshold for the first-order stimulus (Gabor patch) both significantly predicted HPT performance even after controlling for age, visual acuity and contrast sensitivity. Bootstrap mediation analysis showed that individual differences in DOH accuracy partly explained these relationships, where those individuals with poorer motion sensitivity on the coherence and Gabor tests showed decreased ability to perceive deviations in motion in the driving videos, which related in turn to their ability to detect the moving hazards.

Conclusions

The ability to detect subtle movements in the driving environment (as determined by the DOH task) may be an important contributor to effective hazard perception, and is associated with age, and an individuals' performance on tests of motion sensitivity. The locus of the processing deficits appears to lie in first-order, rather than second-order motion pathways.

Impact and interest:

2 citations in Scopus
Search Google Scholar™
1 citations in Web of Science®

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

44 since deposited on 01 Dec 2014
23 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 79098
Item Type: Journal Article
Refereed: Yes
Keywords: age; driving; hazard perception; motion perception; vision
DOI: 10.1111/opo.12140
ISSN: 0275-5408
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Optometry & Vision Science
Current > Schools > School of Psychology & Counselling
Copyright Owner: Copyright 2014 The Authors
Copyright Statement: This is the accepted version of the following article: Lacherez P, Turner L, Lester R, Burns Z & Wood JM. Age-related changes in perception of movement in driving scenes. Ophthalmic Physiol Opt 2014; 34: 445–451. doi:10.1111/opo.12140, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/opo.12140/abstract
Deposited On: 01 Dec 2014 23:21
Last Modified: 09 Jul 2015 23:16

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page