期刊
FRONTIERS IN NEURAL CIRCUITS
卷 14, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fncir.2020.00032
关键词
hippocampus; cerebral cortex; vasoactive intestinal polypeptide; interneuron; microcircuit; disinhibition; behavior
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC) [RGPIN-2016-06182, 342292-2012-RGPIN, CGSD2 -504375 -2017]
- Canadian Institutes of Health Research (CIHR) [MOP-137072, MOP-142447]
In the brain, there is a vast diversity of different structures, circuitries, cell types, and cellular genetic expression profiles. While this large diversity can often occlude a clear understanding of how the brain works, careful analyses of analogous studies performed across different brain areas can hint at commonalities in neuronal organization. This in turn can yield a fundamental understanding of necessary circuitry components that are crucial for how information is processed across the brain. In this review, we outline recentin vivoandin vitrostudies that have been performed in different cortical areas to characterize the vasoactive intestinal polypeptide (VIP)- and/or calretinin (CR)-expressing cells that specialize in inhibiting GABAergic interneurons. In doing so, we make the case that, across cortical structures, interneuron-specific cells commonly specialize in the synaptic disinhibition of excitatory neurons, which can ungate the integration and plasticity of external inputs onto excitatory neurons. In line with this, activation of interneuron- specific cells enhances animal performance across a variety of behavioral tasks that involve learning, memory formation, and sensory discrimination, and may represent a key target for therapeutic interventions under different pathological conditions. As such, interneuron-specific cells across different cortical structures are an essential network component for information processing and normal brain function.
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