感官适应支持在感知决策过程中灵活地积累证据
bioRxiv : the preprint server for biology
|February 12, 2026
概括
灵活的决策依赖于证据的积累. 这项研究表明大脑中的感官适应.
科学领域:
- 神经科学是一个神经科学.
- 决策研究 决策研究
- 感官处理 感官处理
背景情况:
- 在动态环境中有效的决策需要灵活的证据积累.
- 虽然模型经常使用适应性"泄漏"参数来实现灵活性,但大脑机制可能有所不同.
- 研究超越蓄电机动力学的适应机制至关重要.
研究的目的:
- 测试适应机制是否涉及证据编码的调整.
- 探索刺激特定感官适应在感知决策中的作用.
主要方法:
- 记录了子中区 (MT) 的单个单位活动.
- 子执行了一个修改的随机点运动方向歧视任务.
- 在测试刺激之前使用适应性刺激,时间稳定性各异.
主要成果:
- 子表现出灵活的决策行为,与适应性泄漏相一致.
- 行为调整与时间背景稳定性相关.
- 在MT中观察到环境依赖的感官适应,独立于兴奋.
结论:
- 特定于刺激的感官适应在感知决策中发挥着新的作用.
- 这种调整塑造了对灵活,取决于环境的积累的现有证据.
- 研究结果表明,适应机制超出了蓄电机动力学的范围.
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