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Paying Attention to Neurons with Discriminating Taste

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1 Paying Attention to Neurons with Discriminating Taste
Alexandre Pouget, Daphné Bavelier  Neuron  Volume 53, Issue 4, Pages (February 2007) DOI: /j.neuron Copyright © 2007 Elsevier Inc. Terms and Conditions

2 Figure 1 Population Codes and Perceptual Biases
(A) Population code for orientation. Each curve shows the mean response of a particular neuron as a function of orientation. The bold red line highlights the curves centered at 10°. (B) When trying to discriminate two similar orientations close to 0° (dotted lines), the neuron responding maximally to 0° (red curve) is of little help because its activity barely changes between the orientations to be discriminated (filled red polygon). By contrast, when the tuning curve are about 30° wide, the neuron responding best to 15° (blue curve) is the most helpful because its activity changes maximally between the two orientations (filled blue polygon). (C) Red curve: expected pattern of activity for an orientation of 55° in a population of neurons with the tuning curves shown in panel (A). Blue dotted line: pattern of activity in response to a 55° line when attention boosts preferentially neurons tuned around 70°. The resulting pattern is more consistent with an orientation of 60° than the true orientation of 55°. (D) The tilt illusion. When surrounded by a grating slightly tilted to the left, the vertical grating in the center appears titled to the right. Neuron  , DOI: ( /j.neuron ) Copyright © 2007 Elsevier Inc. Terms and Conditions

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