December 2005
Volume 5, Issue 12
Free
OSA Fall Vision Meeting Abstract  |   December 2005
Perceptual decision-making in the human brain
Author Affiliations
  • Leslie Ungerleider
    NIH
Journal of Vision December 2005, Vol.5, 44. doi:10.1167/5.12.44
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      Leslie Ungerleider; Perceptual decision-making in the human brain. Journal of Vision 2005;5(12):44. doi: 10.1167/5.12.44.

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Abstract

Findings from single-cell recording studies suggest that a comparison of the outputs of different pools of selectively tuned lower-level sensory neurons may be a general mechanism by which higher-level cortical regions compute perceptual decisions. For example, when monkeys must decide whether a noisy field of dots is moving upward or downward, a decision can be formed by computing the difference in responses between lower-level neurons sensitive to upward motion and those sensitive to downward motion. I will present fMRI evidence that even for high-level object categories, the comparison of the outputs of different pools of selectively tuned neurons could be a general mechanism by which the human brain computes perceptual decisions. Furthermore, I will argue that the posterior dorsolateral prefrontal cortex in humans has general decision-making functions, independent of stimulus and response modalities.

Ungerleider, L. (2005). Perceptual decision-making in the human brain [Abstract]. Journal of Vision, 5(12):44, 44a, http://journalofvision.org/5/12/44/, doi:10.1167/5.12.44. [CrossRef]
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