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全光学映射显示,在光遗传性沉默后,皮质感官反应的分布式抑制

Manuel Ambrosone¹, Elena Montagni², Francesco Resta³

¹European Laboratory for Non-Linear Spectroscopy, Florence, Italy; Neuroscience Institute, National Research Council, Pisa, Italy; Physics and Astronomy Department, University of Florence, Sesto Fiorentino, Italy.

Brain stimulation

|July 9, 2025

概括

研究人员开发了一种全新的全光学工具来控制和观察大脑活动. 这种光遗传系统有效地沉默了神经元活动,影响了整个皮质的感官反应.

科学领域:

神经科学是一个神经科学.
系统神经科学系统神经科学
计算神经科学是一种神经科学.

背景情况:

大脑计算依赖于中视镜皮层动力学,用于诸如感官感知和运动控制等功能.
了解皮层动力学和行为之间的因果关系需要操纵中层活动并观察分布式效应.

研究的目的:

开发一种全新的全光学系统,用于抑制刺激神经元.
为了能够同时监测小鼠在任意的背皮质部位的皮质反应.

主要方法:

综合广场成像和光遗传学,实现一个全光学方法.
使用AAV用于全脑指标 (jRCaMP1b) 和抑制执行器 (stGtACR2) 的共同表达.
测试系统校准和抑制对感官反应的影响.

主要成果:

激光功率控制在辐射部位的自发神经元活动减少.
在整个半球范围内,阻断"桶场皮质"减少了感官唤起的响应幅度.
在分布式皮质网络中观察到感官反应的短期和长期抑制.

结论:

这种全新的全光学系统允许有针对性的抑制和并发的中层次皮质活动监测.
提供对皮质电路动态和神经元活动与行为之间的因果关系的见解.
在神经疾病中研究感官反应障碍的潜在工具.

关键词:

一个全光学的全光学.桶场皮质桶场皮质的皮质.抑制抑制的抑制作用视觉遗传学视觉遗传学胡须刺激胡须刺激在 stGtACR2中使用.

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Somatosensation

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The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.