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Some task and signal dependent rules for spatial vision

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image of Spatial Vision
For more content, see Multisensory Research and Seeing and Perceiving.

In this paper we consider the types of computational processes which may be involved in solving a variety of perceptual problems from the detection of signals in the presence of others, to texture discrimination, and some aspects of pattern recognition. These processes centre around the involvement of correlational computations, the transduction of their input/output values, and the apparent involvement of selective filtering mechanisms. Our results suggest that even if fixed detectors (in tuning characteristics) are involved in low-level vision, the human observer apparently employs much more adaptive (variable tuning characteristic) filters and nonlinear mechanisms in more complex spatial tasks.

Affiliations: 1: Department of Psychology, The University of Alberta, Edmonton, AB, T6G 2E9, Canada; 2: Department of Mathematics, The University of Alberta, Edmonton, AB, T6G 2E9, Canada, Institute for Medical Psychology, University of Munich, Munich, FRG


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