在小鼠皮层中的表达VIP和SST的GABAergic内部神经元的功能性thalamocortical内化
Michael Feyerabend1,2,3, Mirko Witte1, Martin Möck1
1Georg-August-University Göttingen, University Medical Center, Institute for Neuroanatomy, Kreuzbergring 36, 37075 Göttingen, Germany.
iScience
|July 4, 2025
概括
感官感知依赖于大脑电路. 甲状腺输入广泛向前皮层中的抑制性神经元 (VIP和SST内部神经元),这表明它在处理感官信息方面发挥了广泛作用.
科学领域:
- 神经科学是一个神经科学.
- 感官处理 感官处理
- 皮层电路中的皮层电路.
背景情况:
- 意识感知涉及到感官皮层中复杂的刺激和抑制电路.
- 泰拉木斯通过腹腔后中核 (VPM) 和后中核 (POm) 的中部部分提供皮层下感官输入.
- 在多大程度上,VPM和POm输入驱动皮质层通过对GABAergic神经元进行突触来抑制前,尚未完全理解.
研究的目的:
- 为了研究从VPM和POm到特定内部神经元群体的预测.
- 为了确定甲状腺输入如何影响由内部神经元介导的前进抑制.
主要方法:
- 利用光遗传学对VPM和POm投影进行有针对性的刺激.
- 采用了敏感刺激和记录技术在皮层.
- 检查了对表达血管活性肠道多 (VIP) 和体静止素 (SST) 的内神经元的投影.
主要成果:
- VPM和POm广泛地向VIP和SST内部神经元在前皮层中发射.
- 这些内部神经元的thalamic输入在很大程度上独立于它们的层状位置或细胞特性.
- 证明了以体为媒介的前抑制是VIP和SST内部神经元电路的共同特征.
结论:
- thalamic输入在通过VIP和SST内部神经元启动前抑制中发挥着重要作用.
- 这些抑制电路可能会根据特定的胡须行为不同地使用.
- 提供了对感官感知和信息处理背后的电路机制的洞察.
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