1296-人类海马体纹波根据预测不确定性调节皮层反应 episode artwork

EPISODE · Jul 18, 2026 · 23 MIN

1296-人类海马体纹波根据预测不确定性调节皮层反应

from 聊聊Sci

这项研究通过对人类海马体和视觉皮层的直接记录,揭示了海马波纹(Ripples)在预测未来信息中的关键作用。研究发现,当面对不可预测的视觉刺激时,海马体会在刺激出现前增加波纹的发生频率和持续时间,以此来应对不确定性。这些预先出现的波纹能够调节视觉皮层的伽马活动,从而优化大脑对信息的处理效率。这种机制将海马体的生理活动与预测编码理论联系起来,证明了海马波纹在处理预期信息增益和精准权重预测误差中的功能。总而言之,该研究阐明了海马体如何通过与新皮层的协调,在感知合成和记忆编码过程中发挥前瞻性的调节作用。References:Frank D, Moratti S, Hellerstedt R, et al. Human hippocampal ripples tune cortical responses based on predicted uncertainty[J]. Nature Neuroscience, 2026: 1-12.前往小宇宙评论区与主播互动

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1296-人类海马体纹波根据预测不确定性调节皮层反应

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