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看到你听到的:通过与任务无关的声音压缩老鼠的视觉感知空间

Mattia Zanzi¹, Francesco G Rinaldi¹, Silene Fornasaro¹

¹Neuroscience Area, International School for Advanced Studies (SISSA), Trieste, Italy.

PLoS computational biology

|October 29, 2025

概括

听觉刺激通过压缩视觉感知空间,显著改变老鼠的视觉感知. 这种由声音强度驱动的效应表明抑制介于听觉视觉相互作用.

科学领域:

神经科学是一个神经科学.
感官处理感官处理
审计视觉互动审计视觉互动

背景情况:

大脑整合了多感官信息,以代表世界.
单模式输入对跨模式处理的影响尚未完全理解.
动物研究表明,听觉输入对视觉皮层处理的相互矛盾的影响.

研究的目的:

研究听觉信号对大鼠视觉感知的直接影响.
确定与任务无关的听觉刺激是否会影响视觉时间频率 (TF) 的分类.
探索听觉视觉交互背后的神经机制.

主要方法:

训练有素的老鼠在视觉TF分类任务中同时使用与任务无关的听觉刺激.
分析了声音强度和时间调制如何影响视觉TF分类.
开发了一个贝叶斯理想观察者模型,具有强度依赖的抑制神经代码.

主要成果:

听觉刺激大大改变了大鼠视觉TF分类,这取决于声音强度.
声音的存在压缩了视觉感知空间.
计算模型准确地预测了观察到的感知选择.

结论:

听觉输入有效地压缩了老鼠的视觉感知空间.
抑制在调解听觉视觉交互方面发挥着关键作用.
这些发现为未来关于视觉皮层编码的研究提供了机制性假设.

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