Prime David J, Ward Lawrence M
Department of Psychology, University of British Columbia, Vancouver, Canada.
Percept Psychophys. 2002 Jul;64(5):771-84. doi: 10.3758/bf03194744.
Uninformative auditory frequency cues have a facilitatory effect on reaction time and accuracy of detection and intensity discrimination of target tones for cue-target intervals of up to 3 sec (Green & McKeown, 2001; Ward, 1997). Under some conditions, however, this facilitatory effect can reverse to an inhibitory effect at cue-target intervals longer than 450 msec (Mondor, Breau, & Milliken, 1998). Thepresent work demonstrates that such inhibitory effects are not found in target-target experiments (Experiment 1) or in cue-target experiments requiring a go-no-go discrimination of the target (Experiment 2), whereas they do appear in the paradigm used by Mondor et al. (1998, Experiment 3), albeit unaffected by the similarity of cue and target. Thus, the frequency-based inhibitory effects sometimes found in auditory cuing tasks can be distinguished empirically from those characterizing spatial inhibition of return (IOR), which are found in both target-target and go-no-go cue-target paradigms. The present work and functional and neurophysiological arguments all support the position that different mechanisms underlie spatial IOR and the inhibitory effects sometimes found in auditory frequency processing.
对于长达3秒的提示-目标间隔，无信息的听觉频率线索对目标音调的检测反应时间和准确性以及强度辨别具有促进作用（格林和麦基翁，2001年；沃德，1997年）。然而，在某些条件下，当提示-目标间隔超过450毫秒时，这种促进作用可能会转变为抑制作用（蒙多尔、布劳和米利肯，1998年）。本研究表明，在目标-目标实验（实验1）或需要对目标进行“是-否”辨别的提示-目标实验（实验2）中未发现这种抑制作用，而在蒙多尔等人（1998年，实验3）使用的范式中确实出现了这种抑制作用，尽管它不受提示和目标相似性的影响。因此，在听觉提示任务中有时发现的基于频率的抑制作用可以通过实验与那些表征返回抑制（IOR）的抑制作用区分开来，返回抑制在目标-目标和“是-否”提示-目标范式中都能发现。本研究以及功能和神经生理学方面的论据均支持这样一种观点，即不同的机制是空间IOR和有时在听觉频率处理中发现的抑制作用的基础。
