Abstract
There is good evidence for an evolved fit between visual systems and the environments within which they have evolved. For example, the peak wavelengths of L and M cones appear to relate to folivory, frugivory, and pelage identification (Sumner and Mollon, 2000, Journal of Experimental Biology 203 1963 - 1986; Sumner and Mollon, 2003 American Journal of Primatology 59 67 - 91) and the low-pass spatio-chromatic sensitivities (Parraga et al, 2002 Current Biology 12 483 - 487) of the primate visual system are well-matched to the task of identifying edible fruit and leaves in a background of natural foliage and branches. However, the ways that the temporal properties of the natural world interact with the spatio-chromatic properties are currently not well understood. We have developed a cone-calibrated high-speed video camera system (200 Hz frame rate) to examine the relationship between the STC properties of natural scenes and the primate visual system. Here we examine how the properties of two classes of temporally varying natural scenes relate to known visual sensitivities: scenes containing behaviourally relevant movement (fruit picking/foraging, changing facial expressions, sign-language communication, tool-use, etc), and potentially behaviourally irrelevant movement (wind-blown grass or trees, water ripples, etc). Our results point to a partial fit between the video spectra and human sensitivity measures.
| Original language | English |
|---|---|
| Pages (from-to) | 181-181 |
| Number of pages | 1 |
| Journal | Perception |
| Volume | 38 |
| Issue number | ECVP Abstract Supplement |
| Publication status | Published - 2009 |