The effects of sleep on objective measures of gap detection using a time-efficient multi-deviant paradigm
Paniz Tavakoli1, Victoria Duda2, Addo Boafo3
1ARiEAL Research Centre, McMaster University, Hamilton, ON, Canada; School of Psychology, University of Ottawa, ON, Canada.
Brain and Cognition
|July 4, 2021
Summary
Auditory temporal resolution, measured by gap detection, is crucial for speech perception. This study found a multi-deviant paradigm may not be ideal for gap detection during NREM sleep, though it can assess longer gap processing.
Area of Science:
- Neuroscience
- Auditory Perception
- Sleep Research
Background:
- Auditory temporal resolution, assessed via gap detection, is vital for speech perception.
- A time-efficient multi-deviant paradigm exists for gap detection.
Purpose of the Study:
- To evaluate the efficacy of a multi-deviant paradigm for gap detection during NREM sleep.
- To compare auditory processing during wakefulness and sleep.
Main Methods:
- Electrophysiological recordings (ERPs) in 10 young adults.
- Utilized a multi-deviant paradigm with gap durations from 2 to 40 ms.
- Tested participants both while awake and during NREM sleep.
Main Results:
- A Difference-related Negativity (DRN) was observed for 10-40 ms gaps during wakefulness, but was absent during sleep.
- During NREM sleep, a P2 was seen for 20-40 ms gaps, followed by a P3a for 30-40 ms gaps.
- An N350 response was recorded for all tested gap durations (10-40 ms) during sleep.
Conclusions:
- The multi-deviant paradigm may not be optimal for determining gap detection thresholds during sleep.
- The paradigm remains valuable for assessing the perception and processing of longer, supra-threshold gaps during sleep.
