Abstract

Temporaland spatial properties of a stimulus visual can be used to isolate different visual pathways (sustained and transient) which are thought to be mediated by different neuronal sub-populations (M- and P-cells) in humans. Temporal modulation has been used to detect early visual dysfunction by way of flicker modulation thresholds or frequency doubling (Casson et al., 1993: Johnson & Samuels, 1997). In these cases it has been assumed that flicker detects losses by targeting sub-populations of neurones.

© 1998 Optical Society of America