Spatial attention can modulate behavioural performance and is associated with several electrophysiological markers. In this study, we used multivariate pattern analysis in electrophysiology data to investigate the effects of covert spatial attention on the quality of stimulus processing and its underlying mechanisms. Our results show that covert spatial attention led to (i) an anticipatory alpha power desynchronization; (ii) enhanced stimuli identity information. Moreover, we found that alpha power fluctuations in anticipation of the relevant stimuli boosted and prolonged the coding of stimulus identity.

中文翻译：

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刺激前阿尔法功效与刺激表现的强度有关

空间注意力可以调节行为表现，并与几种电生理指标有关。在这项研究中，我们在电生理数据中使用了多元模式分析，以研究隐蔽空间注意对刺激处理质量及其潜在机制的影响。我们的结果表明，隐蔽的空间注意力导致（i）预期的alpha功率不同步；（ii）增强的刺激身份信息。此外，我们发现预期相关刺激的alpha功率波动会增强并延长刺激身份的编码。