Professor Hannah Smithson’s research examines the neural and perceptual mechanisms underlying vision, especially colour and material perception. She uses psychophysical experiments, high-resolution retinal imaging (adaptive optics ophthalmoscopy) and computer-rendered stimuli to probe how signals from the three cone types are combined, compared and transformed in the visual system, and how our brain maintains constancy of hue, brightness and gloss under changing illumination. Her group also investigates temporal dynamics of visual processing and applications to display technology and visual disorders.