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颜色对立性在老鼠皮下视觉系统中广泛存在,并以不同的方式准GABAergic和非GABAergic神经元
R C Feord1, A Gomoliszewska1, A Pienaar1
1Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Scientific reports
|June 8, 2023
概括
研究人员开发了新的刺激来研究小鼠的色彩视觉,证实了视觉系统中广泛的形对手处理. 这种处理在非GABAerg细胞中得到了丰富,为神经通路提供了新的见解.
科学领域:
- 神经科学是一个神经科学.
- 视觉科学 视觉科学 视觉科学
- 动物行为 动物行为
背景情况:
- 颜色视觉对于动物行为至关重要,但它的神经通路尚不清楚,特别是在小鼠中.
- 鼠标视网膜组织对研究色彩视觉机制提出了挑战,一些理论建议依赖非经典的棒对立.
- 以前使用转基因小鼠的研究表明,在皮下视觉系统中存在广泛的形对立性.
研究的目的:
- 建立和验证用于选择性操纵小鼠短波长 (S-) 和中波长 (M-) 圆光激发的刺激.
- 为了确定野生类型小鼠颜色视觉中存在形对立的程度.
- 在非图像形成的视觉中心绘制颜色对手路径,包括GABAergic细胞.
主要方法:
- 在小鼠中开发和验证用于选择性S-和M-子素激发的新兴刺激物.
- 应用这些刺激来评估鼠标视觉和前的对立性.
- 对GABAergic (GAD2-表达) 细胞的光遗传学鉴定,以绘制前体中的颜色对立性和细胞间传单/腹侧生殖器 (IGL/vLGN) 的颜色对立性.
主要成果:
- 在超过25%的神经元中证实了圆对立性,这些神经元遍及小鼠视觉丘脑和前.
- 发现S-ON/M-OFF对抗性在非GABAergic细胞中特别丰富.
- 在IGL/vLGN中识别的GABAergic细胞完全缺乏S-ON/M-OFF对抗性.
结论:
- 已经建立了一种新的方法来研究小鼠的形功能.
- 在老鼠的视觉系统中,形对手处理令人惊地广泛.
- 在处理颜色信号的通路内存在功能专业化,GABAergic和非GABAergic细胞的角色是不同的.
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