Chan T M Vanessa, Alain Claude
Department of Psychology, University of Toronto, Sidney Smith Building, 100 St. George St, Toronto, ON, M5S 3G3, Canada.
Rotman Research Institute, Baycrest Health Sciences, Toronto, Ontario, M6A 2E1, Canada.
Atten Percept Psychophys. 2019 Jan;81(1):253-269. doi: 10.3758/s13414-018-1586-8.
The ephemeral nature of spoken words creates a challenge for oral communications where incoming speech sounds must be processed in relation to representations of just-perceived sounds stored in short-term memory. This can be particularly taxing in noisy environments where perception of speech is often impaired or initially incorrect. Usage of prior contextual information (e.g., a semantically related word) has been shown to improve speech in noise identification. In three experiments, we demonstrate a comparable effect of a semantically related cue word placed after an energetically masked target word in improving accuracy of target-word identification. This effect persisted irrespective of cue modality (visual or auditory cue word) and, in the case of cues after the target, lasted even when the cue word was presented up to 4 seconds after the target. The results are framed in the context of an attention to memory model that seeks to explain the cognitive and neural mechanisms behind processing of items in auditory memory.
口语转瞬即逝的特性给口头交流带来了挑战,在口头交流中,传入的语音必须与存储在短期记忆中的刚感知到的声音表征相关联进行处理。在嘈杂的环境中,这可能尤其费力,因为在这种环境中语音感知常常受损或最初就是错误的。已证明使用先前的上下文信息(例如,语义相关的单词)可提高噪声环境下语音识别的能力。在三个实验中,我们证明了在能量掩蔽的目标词之后放置语义相关的提示词,在提高目标词识别准确性方面具有类似的效果。无论提示方式(视觉或听觉提示词)如何,这种效果都持续存在,并且在目标词之后出现提示词的情况下,即使提示词在目标词之后长达4秒出现,这种效果仍然存在。这些结果是在一个关注记忆模型的背景下阐述的,该模型旨在解释听觉记忆中项目处理背后的认知和神经机制。