Centre-surround interactions in ageing human vision
Grant number: DP140100157 | Funding period: 2014 - 2017
Australia has a rapidly ageing population. This project will study how ageing affects the visual perception of objects presented on non-uniform backgrounds. Our ability to discriminate objects from their backgrounds is key to most natural visual tasks. The visual processes involved are known as centre-surround interactions, and are considered fundamental building blocks to human perception. This project will significantly advance our knowledge of which spatial visual mechanisms are altered due to age, supplying key information for understanding and improving visual environments for the elderly, as well as increasing knowledge of the brain mechanisms susceptible to the ageing process.
Related publications (9)
Orientation-dependency of perceptual surround suppression and orientation decoding of centre-surround stimuli are preserved with healthy ageing
Bao N Nguyen, Yu Man Chan, Stefan Bode, Allison M McKendrick
A key visual neuronal property that is mirrored in human behaviour is centre-surround contrast suppression, which is orientation-d..
Acute caffeine ingestion affects surround suppression of perceived contrast
Bao N Nguyen, Sui-Ann Hew, John Ly, Hee-Young Shin, Jessica C Wong, Emily Yeung, Allison M McKendrick
Caffeine is a widely used psychostimulant that is associated with increased acetylcholine levels in mammalian brain and acetycholi..
Mismatched summation mechanisms in older adults for the perception of small moving stimuli
Thomas J McDougall, Bao N Nguyen, Allison M McKendrick, David R Badcock
Previous studies have found evidence for reduced cortical inhibition in aging visual cortex. Reduced inhibition could plausibly in..