Abstract：
Considerable debate exists about the interplay between auditory and motor speech systems. Some argue for common neural mechanisms, whereas others assert that there are few shared resources. In four experiments, we tested the hypothesis that priming the speech motor system by repeating syllable pairs aloud improves subsequent syllable discrimination in noise compared with a priming discrimination task involving same-different judgments via button presses. Our results consistently showed that participants who engaged in syllable repetition performed better in syllable discrimination in noise than those who engaged in the priming discrimination task. This gain in accuracy was observed for primed and new syllable pairs, highlighting increased sensitivity to phonological details. The benefits were comparable whether the priming tasks involved auditory or visual presentation. Inserting a 1-h delay between the priming tasks and the syllable-in-noise task, the benefits persisted but were confined to primed syllable pairs. Finally, we demonstrated the effectiveness of this approach in older adults. Our findings substantiate the existence of a speech production-perception relationship. They also have clinical relevance as they raise the possibility of production-based interventions to improve speech perception ability. This would be particularly relevant for older adults who often encounter difficulties in perceiving speech in noise.
摘要：
关于听觉和运动语音系统之间的相互作用存在相当多的争论。一些人认为常见的神经机制，而其他人则断言共享资源很少。在四个实验中，我们检验了以下假设：与通过按钮按下涉及相同-不同判断的启动辨别任务相比，通过大声重复音节对来启动语音运动系统可以改善随后的音节辨别噪声。我们的结果一致表明，从事音节重复的参与者在噪声中的音节辨别方面比从事启动辨别任务的参与者表现更好。这种精度的提高被观察到了初始和新的音节对，强调对语音细节的敏感性增加。无论启动任务涉及听觉还是视觉表现，好处都是可比的。在启动任务和音节噪声任务之间插入1小时的延迟，好处仍然存在，但仅限于启动音节对。最后,我们证明了这种方法在老年人中的有效性.我们的发现证实了言语产生-感知关系的存在。它们还具有临床相关性，因为它们提高了基于生产的干预措施以提高言语感知能力的可能性。这对于经常在噪声中感知语音时遇到困难的老年人尤其相关。
