ABSTRACT
The ultimate goal of psychophysical research is to explain the behavioral responses of observers to multidimensional, real-world stimuli. This straightforward objective is exceedingly difficult to achieve. A full analysis must not only provide a physiologically based model of sensory information processing along each relevant dimension, but also a model of how multiple information sources within and across dimensions are combined or otherwise interact. Finally, the model must separate and account for the higher-level cognitive processes involved in attentional and decisional behaviors.
