核心要点
- 问题/背景
- 这篇 Nature Communications 论文用 laminar fMRI 研究人类听觉皮层如何按 cortical layer 分工完成预测加工。结果显示 superficial layers 更偏向编码 expectation deviation / prediction error，而 deep layers 更偏向维持和更新 internal model。它值得收录，因为它把 predictive coding 从抽象理...
原始摘要与中文对照
中文对照翻译
人类皮层层级中的预测性声学处理。在我们动态的环境中，预测性处理对于听觉感知及其相关行为至关重要。预测编码通过将推断过程实现为跨皮层层级和区域的信息交换来使其形式化。我们利用层流特异性血氧水平依赖成像测量了对级联奇异范式的反应，以将预测性听觉过程建立在中观人类皮层结构上。采用建模方法，我们推导出神经动力学中假定的变化，同时考虑了引流效应。我们表明，预测的违反可能具有层级组织，并与极平面ES内部模型浅层对深层变化的反应相关联。我们的结果支持颞叶皮层结构在预测编码实现中的作用，并强调了层流fMRI PR在广泛颞叶区域中研究中观过程的能力。IN LE C TI R A
原始摘要
In our dynamic environments, predictive processing is vital for auditory perception and its associated behaviors. Predictive coding formalizes inferential processes by implementing them as information exchange across cortical layers and areas. With laminar-specific blood oxygenation level-dependent imaging we measured responses to a cascading oddball paradigm, to ground predictive auditory processes on the mesoscopic human cortical architecture. Using a modeling approach, we derive putative changes in neural dynamics while accounting for draining effects. We show that the violations of predictions are potentially hierarchically organized and associated with responses in superficial layers of the planum polare ES internal model to changes in deep layers. Our results support the role of temporal cortical architecture in the implementation of predictive coding and highlight the ability of laminar fMRI PR to investigate mesoscopic processes in a large extent of temporal areas. IN LE C TI R A