Inhibition of mediodorsal thalamus disrupts thalamofrontal connectivity and cognition.
Inhibition of mediodorsal thalamus disrupts thalamofrontal connectivity and cognition.
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DOI:
10.1016/j.neuron.2013.01.038
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发表时间:
2013-03-20
期刊:
影响因子:
16.2
通讯作者:
Kellendonk C
中科院分区:
文献类型:
--
作者:
Parnaudeau S;O'Neill PK;Bolkan SS;Ward RD;Abbas AI;Roth BL;Balsam PD;Gordon JA;Kellendonk C
Cognitive deficits are central to schizophrenia but the underlying mechanisms still remain unclear. Imaging studies performed in patients point to decreased activity in the medio-dorsal thalamus (MD) and reduced functional connectivity between the MD and prefrontal cortex (PFC) as candidate mechanisms. However, a causal link is still missing. We used a pharmacogenetic approach in mice to diminish MD neuron activity and examined the behavioral and physiological consequences. We found that a subtle decrease in MD activity is sufficient to trigger selective impairments in prefrontal-dependent cognitive tasks. In vivo recordings in behaving animals revealed that MD-PFC beta-range synchrony is enhanced during acquisition and performance of a working memory task. Decreasing MD activity interfered with this task-dependent modulation of MD-PFC synchrony, which correlated with impaired working memory. These findings suggest that altered MD activity is sufficient to disrupt prefrontal-dependent cognitive behaviors, and could contribute to the cognitive symptoms observed in schizophrenia.
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DOI:
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发表时间:
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影响因子:
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影响因子:
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