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"Probing sensory representations with metameric stimuli"

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If you have a question about this talk, please contact John Mollon.

The host for this talk is Máté Lengyel, Engineering Department. Note that the title and topic of the talk have been revised.

Perceptual metamers – stimuli that differ physically, but appear the same – played a fundamental role in the development of the trichromatic theory of human color vision. Vision scientists of the 19th century used these stimuli to precisely characterize key properties of the early visual system, allowing the standardization of color representations for engineered devices. I’ll discuss recent work in which we have used simple models of the early visual and auditory systems to predict the existence of new forms of metameric stimuli. We’ve developed methods of generating such stimuli, and used them in both perceptual and physiological studies aimed at validating and further refining the models from which they are derived. I’ll also discuss implications for engineered systems.

This talk is part of the Craik Club series.

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