Abstract：
Neural oscillations play a role in sensory processing by coordinating synchronized neuronal activity. Synchronization of gamma oscillations is engaged in local computation of feedforward signals and synchronization of alpha-beta oscillations is engaged in feedback processing over long-range areas. These spatially and spectrally segregated bi-directional signals may be integrated by a mechanism of cross-frequency coupling. Synchronization of neural oscillations has also been proposed as a mechanism for information integration across multiple sensory modalities. A transient stimulus or rhythmic stimulus from one modality may lead to phase alignment of ongoing neural oscillations in multiple sensory cortices, through a mechanism of cross-modal phase reset or cross-modal neural entrainment. Synchronized activities in multiple sensory cortices are more likely to boost stronger activities in downstream areas. Compared to synchronized oscillations, asynchronized oscillations may impede signal processing, and may contribute to sensory selection by setting the oscillations in the target-related cortex and the oscillations in the distractor-related cortex to opposite phases.
摘要：
神经振荡通过协调同步的神经元活动在感觉处理中发挥作用。伽马振荡的同步参与前馈信号的本地计算，而α-β振荡的同步参与远程区域的反馈处理。这些空间和频谱分离的双向信号可以通过交叉频率耦合的机制来集成。神经振荡的同步也被提出作为跨多种感觉模态的信息整合的机制。来自一种模态的瞬时刺激或节律刺激可能导致多个感觉皮质中正在进行的神经振荡的相位对齐。通过跨模态相位复位或跨模态神经夹带的机制。多个感觉皮层中的同步活动更有可能促进下游区域的更强活动。与同步振荡相比，异步振荡可能会阻碍信号处理，并且可能通过将目标相关皮层中的振荡和干扰相关皮层中的振荡设置为相反的相位来促进感官选择。
