Institute for Learning and Brain Sciences, University of Washington, Seattle, Washington 98195, USA.
J Acoust Soc Am. 2013 Aug;134(2):EL165-71. doi: 10.1121/1.4812439.
The ability to consciously switch attention between speakers of interest is necessary for communication in many environments, especially when multiple talkers speak simultaneously. Segregating sounds of interest from the background, which is necessary for selective attention, depends on stimulus acoustics such as differences in spectrotemporal properties of the target and masker. However, the relationship between top-down attention control and bottom-up stimulus segregation is not well understood. Here, two experiments were conducted to examine the time necessary for listeners to switch auditory attention, and how the ability to switch attention relates to the pitch separation cue available for bottom-up stream segregation.
在许多环境中，能够在感兴趣的说话者之间有意识地切换注意力是进行交流的必要条件，尤其是当多个说话者同时说话时。为了进行选择性注意，需要将感兴趣的声音与背景声音分开，这取决于刺激的声学特性，例如目标和掩蔽声的频谱和时变特性的差异。然而，自上而下的注意控制与自下而上的刺激分离之间的关系尚不清楚。在这里，进行了两项实验来检验听众切换听觉注意力所需的时间，以及注意切换能力与用于自下而上流分离的音高分离线索之间的关系。
