Chief Supervisor

Prof. Henry CHAN

Project Title

Synopsis

Colour is an important and integral component of our normal visual experience as humans and is defined as a visual perceptual property derived from the light spectrum interacting with the eyes’ photoceptor cells known as the cones. The human eye can see and distinguish colors based on the varying sensitivity of three different cones: short- (S-cone), middle- (M-Cone), or long-wavelength sensitive (L-Cone) in the retina to light of different wavelengths.

The perception of colour begins at the retina where these photoreceptors receive the stimuli and translate them into visual impulses. The characterization of the physical stimulus for colour and the perceptual output experienced as colour has been described in literature, but the neural mechanisms that underlie the transformation from stimulus to perception have not been completely understood (Conway et al., 2010). Understanding the mechanisms of these cones at the human retina would give insight into how modern technology could be developed to improve the perception of colour among persons with colour vision deficiency (Shen et al., 2021). In this study, we hope to provide insight into retinal colour-matching mechanisms by measuring the electrical activity and response of cone receptors in response to different colour stimuli using electroretinography.