Basing perceptual decisions on the most informative sensory neurons.
Basing perceptual decisions on the most informative sensory neurons.
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基于信息最丰富的感觉神经元做出感知决策。
DOI:
10.1152/jn.00273.2010
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发表时间:
2010
影响因子:
2.5
通讯作者:
Serences,JohnT
中科院分区:
文献类型:
--
作者:
Scolari,Miranda;Serences,JohnT
Single unit recording studies show that perceptual decisions are often based on the output of sensory neurons that are maximally responsive (or “tuned”) to relevant stimulus features. However, when performing a difficult discrimination between two highly similar stimuli, perceptual decisions should instead be based on the activity of neurons tuned away from the relevant feature (off-channelneurons) as these neurons undergo a larger firing rate change and are thus more informative. To test this hypothesis, we measured feature-selective responses in human primary visual cortex (V1) using functional magnetic resonance imaging and show that the degree of off-channel activation predicts performance on a difficult visual discrimination task. Moreover, this predictive relationship between off-channel activation and perceptual acuity is not simply the result of extensive practice with a specific stimulus feature (as in studies of perceptual learning). Instead, relying on the output of the most informative sensory neurons may represent a general, and optimal, strategy for efficiently computing perceptual decisions.
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DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
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通讯作者:
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影响因子:
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作者:
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通讯作者:
Snodderly, DM
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通讯作者:
Newsome, WT
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通讯作者:
Shadlen, MN
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通讯作者:
TOOTELL, RBH