Distributed and Mixed Information in Monosynaptic Inputs to Dopamine Neurons.
Distributed and Mixed Information in Monosynaptic Inputs to Dopamine Neurons.
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在多巴胺神经元的单突触输入中分布和混合信息。
DOI:
10.1016/j.neuron.2016.08.018
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发表时间:
2016-09-21
期刊:
影响因子:
16.2
通讯作者:
Watabe-Uchida M
中科院分区:
文献类型:
--
作者:
Tian J;Huang R;Cohen JY;Osakada F;Kobak D;Machens CK;Callaway EM;Uchida N;Watabe-Uchida M
Dopamine neurons encode the difference between actual and predicted reward, or reward prediction error (RPE). Although many models have been proposed to account for this computation, it has been difficult to test these models experimentally. Here we established an awake electrophysiological recording system, combined with rabies virus and optogenetic cell-type identification, to characterize the firing patterns of monosynaptic inputs to dopamine neurons while mice performed classical conditioning tasks. We found that each variable required to compute RPE, including actual and predicted reward, was distributed in input neurons in multiple brain areas. Further, many input neurons across brain areas signaled combinations of these variables. These results demonstrate that even simple arithmetic computations such as RPE are not localized in specific brain areas but rather distributed across multiple nodes in a brain-wide network. Our systematic method to examine both activity and connectivity revealed unexpected redundancy for a simple computation in the brain. Tian et al. combined rabies virus and photo-tagging to record from monosynaptic inputs to dopamine neurons. Information for reward prediction error computations is distributed and already mixed in input neurons, suggesting highly redundant and distributed computation for a simple arithmetic.
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DOI:
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发表时间:
2011-01-26
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
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期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
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影响因子:
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DOI:
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发表时间:
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期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
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Eskandar EN
DOI:
10.1523/jneurosci.3886-12.2013
发表时间:
2013-03-13
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
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通讯作者:
Song MR