Elapsed decision time affects the weighting of prior probability in a perceptual decision task.

@article{Hanks2011ElapsedDT,
  title={Elapsed decision time affects the weighting of prior probability in a perceptual decision task.},
  author={Timothy D. Hanks and Mark E. Mazurek and Roozbeh Kiani and Elisabeth Hopp and Michael N. Shadlen},
  journal={The Journal of neuroscience : the official journal of the Society for Neuroscience},
  year={2011},
  volume={31 17},
  pages={6339-52}
}
Decisions are often based on a combination of new evidence with prior knowledge of the probable best choice. Optimal combination requires knowledge about the reliability of evidence, but in many realistic situations, this is unknown. Here we propose and test a novel theory: the brain exploits elapsed time during decision formation to combine sensory evidence with prior probability. Elapsed time is useful because (1) decisions that linger tend to arise from less reliable evidence, and (2) the… CONTINUE READING
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