CRIMINATION, CONTEXT, AND SENSORY REPRESENTATIONS

  • Bruce A. Schneider
  • Scott Parker

Abstract

Over the past two decades, a number of studies have shown that discrimination,identification, and judgments of sensory magnitude, are affected by both stimulus context andthe observer’s expectations. Here we argue that these contextual effects negate the possibilityof deriving scales of sensory magnitude that are unique up to an affine transformation.However, in compensation, psychophysics has provided us with rich and robust techniquesthat enable us to explore the nature of sensory experience and how it is altered by bottom-up(stimulus driven) and top-down (knowledge driven) factors.
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