A comprehensive model of the binocular processing mechanisms in normal vision is an essential prerequisite to understanding binocular visual disorders. The goal of this proposal is thus to determine the number and form of the mechanisms involved in binocular and stereoscopic processing. The significance of this goal is to provide a basis from which to evaluate disorders of human binocular vision including strabismus, optical imbalances and the effects of monocular retinal disturbances. How the binocular sensory processing is affected by these problems and to what degree it recovers from them is determined by the mechanisms of binocular processing. A full study of the structure of human stereopsis will be conducted to determine the organization of both spatial channels and binocular disparity channels for stereopsis. The stimuli will be designed to be restricted to local regions on the dimensions of eccentricity, spatial frequency and disparity, to control for interactions between these dimensions. This study can estimate how many separate neural mechanisms make up the input for stereopsis under a full range of stimulus conditions. A similar analysis will be conducted with stimuli designed to isolate the processes of perceptual depth reconstruction, to determine whether there is a multichannel structure for human depth perception.
| Tyler, C W; Kontsevich, L L; Ferree, T C (2008) Independent components in stimulus-related BOLD signals and estimation of the underlying neural responses. Brain Res 1229:72-89 |
| Likova, Lora T; Tyler, Christopher W (2007) Stereomotion processing in the human occipital cortex. Neuroimage 38:293-305 |
| Tyler, Christopher W; Likova, Lora T; Kontsevich, Leonid L et al. (2006) The specificity of cortical region KO to depth structure. Neuroimage 30:228-38 |
| Tyler, Christopher W; Kontsevich, Leonid L (2005) The structure of stereoscopic masking: position, disparity, and size tuning. Vision Res 45:3096-108 |
| Tyler, Christopher W (2004) Representation of stereoscopic structure in human and monkey cortex. Trends Neurosci 27:116-8; discussion 118-20 |
| Likova, Lora T; Tyler, Christopher W (2003) Spatiotemporal relationships in a dynamic scene: stereomotion induction and suppression. J Vis 3:304-17 |
| Chen, Chien-Chung; Tyler, Christopher W; Baseler, Heidi A (2003) Statistical properties of BOLD magnetic resonance activity in the human brain. Neuroimage 20:1096-109 |
| Likova, Lora T; Tyler, Christopher W (2003) Peak localization of sparsely sampled luminance patterns is based on interpolated 3D surface representation. Vision Res 43:2649-57 |
| Norcia, Anthony M; Candy, T Rowan; Pettet, Mark W et al. (2002) Temporal dynamics of the human response to symmetry. J Vis 2:132-9 |
| Cavanagh, Patrick; Anstis, Stuart (2002) The boogie-woogie illusion. Perception 31:1005-11 |
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