Department of Psychology, University of York, York, YO10 5DD, United Kingdom.
J Acoust Soc Am. 2011 Oct;130(4):EL129-34. doi: 10.1121/1.3629139.
Some listeners are insensitive to the direction of pure-tone frequency changes when the standard frequency is roved widely over trials, but less so when the standard frequency is fixed and trial-by-trial feedback is provided. The present experiment tested the hypothesis that fixing the standard frequency and providing feedback is advantageous for direction-impaired listeners because under these conditions the listeners can learn to respond correctly without genuinely perceiving frequency-change direction. This hypothesis was ruled out by the experiment. It appears instead that direction-impaired listeners find it difficult to ignore the irrelevant frequency changes introduced by roving.
有些听众在标准频率广泛变化的试验中对纯音频率变化的方向不敏感，但当标准频率固定且提供逐次反馈时，他们的敏感度则较低。本实验检验了以下假设：固定标准频率并提供反馈对方向感受损的听众有利，因为在这些条件下，听众可以在没有真正感知频率变化方向的情况下学会正确响应。该假设被实验否定。相反，方向感受损的听众似乎发现很难忽略漫游引入的不相关频率变化。
