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与胡须相关的感觉和运动皮质输入的细胞类型特定的连接到背部状体
Branden D Sanabria1, Sindhuja S Baskar1, Alex J Yonk1
1Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway 08854, New Jersey.
运动皮层 (M1) 和感官皮层 (S1) 的输入不同地准条状神经元. M1输入优先激活脊状投射神经元 (SPNs),影响感觉运动集成.
科学领域:
- 神经科学是一个神经科学.
- 发动机控制器的控制器
- 突触性可塑性 突触性可塑性
背景情况:
- 前脊侧条纹体 (DLS) 通过来自主运动皮层 (M1) 和感觉皮层 (S1) 的融合输入集成传感运动信息.
- M1和S1皮质状突触表现出功能上的差异,影响状棘状投射神经元 (SPN) 和快速尖端内部神经元 (FSI),并影响感官引导的行为.
研究的目的:
- 调查M1和S1输入到条状神经元的亚细胞解剖分布的差异.
- 为了确定M1和S1输入是否针对SPN和FSI,在DLS中采用不同的模式.
主要方法:
- 利用编码意大利面怪物光蛋白 (sm.FPs) 的腺相关病毒载体注入小鼠的M1和S1中.
- 采用了共聚焦显微镜和ex vivo补丁电生理学,用于对已识别的SPN和FSI进行皮质地层输入的3D重建.
主要成果:
- 两个M1和S1输入双重激活SPN和FSI.
- 在SPN中观察到对M1输入的偏差,但在FSI中没有.
- M1和S1输入显示出类似的树突分布,但与FSI相比,在SPN中更集群.
结论:
- 细胞类型的特定机制是皮质输入在条纹体的整合的基础.
- 从M1到SPN的功能连接性更强,很可能是由于突触输入的数量更高.
- 皮质干连接的差异有助于细胞特异性的感觉运动集成在条纹体.
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