β-Bursts over Frontal Cortex Track the Surprise of Unexpected Events in Auditory, Visual, and Tactile Modalities.
β-Bursts over Frontal Cortex Track the Surprise of Unexpected Events in Auditory, Visual, and Tactile Modalities.
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额叶皮质上的β-爆发追踪听觉、视觉和触觉方式中意外事件的惊喜。
DOI：
10.1162/jocn_a_01958
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发表时间：
2023
影响因子：
3.2
通讯作者：
Wessel,JanR
中科院分区：
文献类型：
--
作者：
Tatz,JoshuaR;Mather,Alec;Wessel,JanR
大脑调节和监控行为的基本方式之一是预测感官环境，并在这些预期被违反时调整行为。因此，惊讶是人类大脑执行的基本计算之一。近年来，人们已经很好地建立了一个关键的方面，其中的行为调整在惊喜是抑制控制的运动系统。此外，由于惊喜自动触发抑制控制没有太多的积极影响，它可以提供独特的见解，主要是反应性控制过程。近年来，人们对人类（和非人类）局部场电位（特别是（p）FC）中的爆发式β频率事件作为抑制控制的潜在特征产生了极大的兴趣。到目前为止，β爆发只在涉及大量主动控制的范例中进行了研究（例如停止信号任务）。在这里，我们使用了两个跨模态的古怪任务，以调查惊喜处理是否伴随着头皮记录的β-爆发的增加。事实上，我们发现，在所有测试的感觉领域（触觉，听觉，视觉）的意外事件之后，额叶皮层的β爆发的低潜伏期增加。在所有实验中，β爆发率与香农信息论中对惊喜的估计呈正相关，香农信息论是一种代表给定刺激违反先前预期程度的惊喜。因此，目前的工作显然暗示了额叶β爆发是惊喜处理的标志。我们讨论这些发现的背景下，共同的框架，抑制和认知控制后，意外事件。
One of the fundamental ways in which the brain regulates and monitors behavior is by making predictions about the sensory environment and adjusting behavior when those expectations are violated. As such, surprise is one of the fundamental computations performed by the human brain. In recent years, it has been well established that one key aspect by which behavior is adjusted during surprise is inhibitory control of the motor system. Moreover, because surprise automatically triggers inhibitory control without much proactive influence, it can provide unique insights into largely reactive control processes. Recent years have seen tremendous interest in burst-like β frequency events in the human (and nonhuman) local field potential—especially over (p)FC—as a potential signature of inhibitory control. To date, β-bursts have only been studied in paradigms involving a substantial amount of proactive control (such as the stop-signal task). Here, we used two cross-modal oddball tasks to investigate whether surprise processing is accompanied by increases in scalp-recorded β-bursts. Indeed, we found that unexpected events in all tested sensory domains (haptic, auditory, visual) were followed by low-latency increases in β-bursting over frontal cortex. Across experiments, β-burst rates were positively correlated with estimates of surprise derived from Shannon's information theory, a type of surprise that represents the degree to which a given stimulus violates prior expectations. As such, the current work clearly implicates frontal β-bursts as a signature of surprise processing. We discuss these findings in the context of common frameworks of inhibitory and cognitive control after unexpected events.