后图片驱动Drosophila的共享视觉运动逆转幻觉
bioRxiv : the preprint server for biology
|February 6, 2026
概括
果表现出一种视觉错觉,其中运动方向反转,类似于哺乳动物. 这种幻觉源于基本的运动路径,并由后图像驱动,而不是空间模式.
科学领域:
- 神经科学是一个神经科学.
- 动物行为 动物行为
- 视觉感知 视觉感知 视觉感知
背景情况:
- 视觉幻觉为感知计算提供了洞察力.
- 一个众所周知的幻觉涉及反向的明显运动方向与交错的格子.
- 这种现象已经在哺乳动物中观察到.
研究的目的:
- 为了调查 *Drosophila* 是否表现出在哺乳动物中看到的相同的明显运动幻觉.
- 为了识别在中造成这种幻觉的神经回路.
- 为了阐明后图像在这种视觉现象中的作用.
主要方法:
- 在Drosophila的行为实验.
- 有针对性的神经元沉默 (T4/T5神经元).
- 两光子成像和计算建模.
主要成果:
- *Drosophila*表现出相同的运动方向逆转幻觉.
- 沉默T4 / T5神经元取消了幻觉.
- 神经记录显示下游的神经元逆转方向偏好.
- 后图像,取决于间叶亮度,是涉的.
- 黑暗的插叶消除了幻觉,而明亮的插叶保留/增强了它.
结论:
- 后视图对于这种共享视觉幻觉至关重要.
- 幻觉的起源是局部化的,涉及T4/T5神经元的基本运动路径.
- 这一发现挑战了正规的运动能量模型,并突出了后图像的作用.
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