Our group conducts basic research into the mechanisms underlying normal adult human perception. We also seek to explore potential applications of our findings - for example, in developing new display technologies and in understanding limitations of vision in disease.
BA (Hons) PhD
Associate Professor of Experimental Psychology
- Tutorial Fellow, Pembroke College
My research focuses on the neural mechanisms that underlie perception.
I am fascinated by how the eye and brain process visual information. My research addresses this question primarily through psychophysical experiments - inferring the perceptual processes that underly particular patterns of human performance on tasks with carefully selected visual stimuli.
I am particularly interested in the perception of colour. How are the signals from the three classes of cone photoreceptors processed to give rise to our perceptions of hue, saturation and brightness? What are the neural circuits of comparison and combination that permit the efficient transmission of colour information from retina to cortex? How does our perception of colour depend on our ability to identify objects and light sources in the visual scene? I am also interested in the way in which our visual systems process rapid sequences of visual events – a sequence of changes in illumination, a sequence of images from successive fixations, or the complex trajectory of a moving object.
Beyond scattering and absorption: Perceptual unmixing of translucent liquids.
Chadwick AC. et al, (2018), J Vis, 18
Compact, modular and in-plane AOSLO for high-resolution retinal imaging
(2018), Biomedical Optics Express
Raw high-speed schlieren footage of acoustic waves in air for subsequent computational analysis and audio recovery.
Harvey JS. et al, (2018), Data Brief, 19, 1647 - 1649
Delayed S-cone sensitivity losses following the onset of intense yellow backgrounds linked to the lifetime of a photobleaching product?
Stockman A. et al, (2018), J Vis, 18
The Importance of Peripheral Visual Information for Stable Fixation: Central Stimuli Provide More Effective Gaze Stabilisation
Hauperich A-K. and Smithson HE., (2018), PERCEPTION, 47, 574 - 575
A major focus of my current research is to develop an adaptive optics enabled ophthalmoscope to capture images of the retina with high fidelity and to present visual stimuli targeted to particular elements of the retinal microstructure. Our aim is to link stimulation, neural activity and perceptual experience to answer such questions as "How do the neural circuits in human retina adapt to maintain sensitivity across the vast range of environmental light levels?"