Department of Psychology and Institute for Mind and Biology, University of Chicago, 940 E. 57th Street, Chicago, IL 60637, United States.
Curr Opin Psychol. 2019 Oct;29:34-40. doi: 10.1016/j.copsyc.2018.11.001. Epub 2018 Nov 8.
Covert spatial attention allows us to prioritize visual processing at relevant locations. A fast growing literature suggests that alpha-band (8-12 Hz) oscillations play a key role in this core cognitive process. It is clear that alpha-band activity tracks both the locus and timing of covert spatial orienting. There is limited evidence, however, for the widely embraced view that alpha oscillations suppress irrelevant visual information during spatial selection. Extant evidence is equally compatible with an account in which alpha activity enables spatial selection through signal enhancement rather than distractor suppression. Thus, more work is needed to characterize the computational role of alpha activity in spatial attention.
隐蔽的空间注意力使我们能够优先处理相关位置的视觉处理。越来越多的文献表明，α 波段（8-12Hz）振荡在这个核心认知过程中起着关键作用。很明显，α 波段活动既跟踪隐蔽空间定向的位置又跟踪其时间。然而，对于被广泛接受的观点，即α 振荡在空间选择过程中抑制不相关的视觉信息，仅有有限的证据。现有的证据同样与一种解释兼容，即α 活动通过信号增强而不是抑制干扰来实现空间选择。因此，需要更多的工作来描述α 活动在空间注意力中的计算作用。
