a new perceptual bias reveals suboptimal population decoding of sensory responses一个新的知觉偏见揭示人口解码的感官反应不佳.pdfVIP

A New Perceptual Bias Reveals Suboptimal Population Decoding of Sensory Responses 1 2,3,4 4,5,6 1 1,7 Tom Putzeys *, Matthias Bethge , Felix Wichmann , Johan Wagemans , Robbe Goris 1 Laboratory of Experimental Psychology, University of Leuven, Leuven, Belgium, 2 Werner Reichardt Centre for Integrative Neuroscience and Institute of Theoretical ¨ ¨ ¨ Physics, University of Tubingen, Tubingen, Germany, 3 Max Planck Institute for Biological Cybernetics, Computational Vision and Neuroscience Group, Tubingen, ¨ Germany, 4 Bernstein Centre for Computational Neuroscience, Tubingen, Germany, 5 AG Neuronale Informationsverarbeitung, Mathematisch-Naturwissenschaftliche ¨ ¨ ¨ ¨ ¨ Fakultat, Eberhard Karls Universitat Tubingen, Tubingen, Germany, 6 Max Planck Institute for Intelligent Systems, Abteilung Empirische Inferenz, Tubingen, Germany, 7 Center for Neural Science, New York University, New York, New York, United States of America Abstract Several studies have reported optimal population decoding of sensory responses in two-alternative visual discrimination tasks. Such decoding involves integrating noisy neural responses into a more reliable representation of the likelihood that the stimuli under consideration evoked the observed responses. Importantly, an ideal observer must be able to evaluate likelihood with high p