Flexibility of sensory representations in prefrontal cortex depends on cell type.
Flexibility of sensory representations in prefrontal cortex depends on cell type.
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前额叶皮层中感觉表示的灵活性取决于细胞类型。
DOI:
10.1016/j.neuron.2009.11.018
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发表时间:
2009-12-10
期刊:
影响因子:
16.2
通讯作者:
Pasternak, Tatiana
中科院分区:
文献类型:
--
作者:
Hussar, Cory R.;Pasternak, Tatiana
Discrimination tasks require processing, interpreting, and linking sensory information to the appropriate motor response. We report that neurons in prefrontal cortex represent visual motion with precision comparable to cortical neurons at early stages of motion processing and readily adapt this representation to behavioral context. We found that direction selectivity, recorded while the monkeys discriminated directions, decreased when they judged motion speed and ignored its direction. This decrease was more pronounced in neurons classified as narrow-spiking (NS) putative inter-neurons, than in broad-spiking (BS) putative pyramidal neurons. However, during passive fixation when the link between motion and its behavioral relevance was removed, both cell types showed a severe selectivity loss. Our results show that flexible sensory representation during active discrimination tasks is achieved in the PFC by a specialized neuronal network of NS neurons readily adjusting their selectivity to behavioral context, and BS neurons capable of maintaining relatively stable sensory representation.
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影响因子:
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作者:
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通讯作者:
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DOI:
10.1098/rstb.1996.0138
发表时间:
1996-10-29
影响因子:
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通讯作者:
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