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Auditory closure with visual cues: Relationship with working memory and semantic memory.

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Summary
This summary is machine-generated.

Listeners use long-term lexical-semantic memory to understand interrupted speech without visual cues. This memory helps fill in missing words, especially when only hearing the audio.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Speech Perception

Background:

  • Understanding speech, especially when degraded, is crucial for communication.
  • Working memory (WM) and long-term memory (LTM) are vital cognitive functions.
  • The influence of visual cues on processing interrupted speech requires further investigation.

Purpose of the Study:

  • To investigate the roles of working memory (WM) and long-term lexical-semantic memory (LTM) in processing interrupted speech.
  • To compare the impact of audio-only versus audio-visual conditions on speech perception.
  • To determine how memory systems contribute to speech restoration.

Main Methods:

  • 29 native English speakers participated in the study.
  • Stimuli included periodically interrupted sentences with speech noise.
  • Memory assessments comprised LTM semantic fluency, verbal WM, and visuo-spatial WM tasks.

Main Results:

  • Speech perception in the audio-only condition correlated positively with semantic fluency (LTM).
  • This correlation was not observed in the audio-video condition.
  • Visual cues appeared to reduce reliance on LTM for speech restoration.

Conclusions:

  • Listeners utilize lexical-semantic retrieval from LTM to compensate for missing speech information when visual cues are absent.
  • Visual information aids speech perception, potentially by bypassing the need for extensive LTM retrieval.
  • The findings highlight the distinct contributions of LTM and visual input in overcoming speech degradation.