Journal article

Motion perception at mesopic light levels: effects of physiological ageing and eccentricity

Juan A Sepulveda, Andrew J Anderson, Joanne M Wood, Allison M McKendrick

Ophthalmic & Physiological Optics | WILEY | Published : 2021

Abstract

PURPOSE: To explore the differential effects of age and eccentricity on the perception of motion at photopic and mesopic light levels. METHODS: Thirty-six visually normal participants (18 younger; mean age 25 years, range: 20-31) and (18 older; mean age 70 years, range: 60-79) underwent two testing sessions, one at photopic and one at mesopic light levels. In each session, motion perception was tested binocularly at two eccentricities (centrally, and peripherally at 15° rightwards and 5° superior to the horizontal) for four motion tasks: minimum contrast of a drifting Gabor to identify motion direction (motion contrast); translational global motion coherence; biological motion embedded in no..

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Grants

Awarded by Australian Research Council


Funding Acknowledgements

This work was supported by Australian Research Council. Discovery Project 190103141 awarded to authors JMW and AMM.