Using the effect of alcohol as a comparison to illustrate the detrimental effects of noise on performance.
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Noise at 65 dB (A) negatively affected performance to a level comparable to alcohol intoxication of 0.10, which supported previous research that reflects positively on the benefits of noise cancelling headphones in reducing the effects of noise on performance especially for non-native English speakers.Abstract:
The aim of the present research is to provide a user-friendly index of the relative impairment associated with noise in the aircraft cabin. As such, the relative effect of noise, at a level typical of an aircraft cabin was compared with varying levels of alcohol intoxication in the same subjects. Since the detrimental effect of noise is more pronounced on non-native speakers, both native English and non-native English speakers featured in the study. Noise cancelling headphones were also tested as a simple countermeasure to mitigate the effect of noise on performance. A total of 32 participants, half of which were non-native English speakers, completed a cued recall task in two alcohol conditions (blood alcohol concentration 0.05 and 0.10) and two audio conditions (audio played through the speaker and noise cancelling headphones). The results revealed that aircraft noise at 65 dB (A) negatively affected performance to a level comparable to alcohol intoxication of 0.10. The results also supported previous research that reflects positively on the benefits of noise cancelling headphones in reducing the effects of noise on performance especially for non-native English speakers. These findings provide for personnel involved in the aviation industry, a user-friendly index of the relative impairment associated with noise in the aircraft cabin as compared with the effects of alcohol. They also highlight the benefits of a simple countermeasure such as noise cancelling headphones in mitigating some of the detrimental effects of noise on performance.read more
Citations
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The effects of noise on key workplace skills.
TL;DR: Simulated aircraft noise was found to affect recognition memory but not working memory or reaction time, and were more pronounced for non-native speakers and reflected performance similar to that for BAC of 0.05 or 0.10.
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The Noise Reduction Provided by Aviation Headsets
TL;DR: To assess the noise reduction provided by in-use aviation headsets, the performance of three headsets, two with the active noise cancellation feature, has been investigated and it was shown to be effective at the low frequencies.
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Voluntary alcohol intake after noise exposure in adolescent rats: hippocampal-related behavioral alterations
TL;DR: Results show that whereas noise-exposed rats presented deficits in habituation memory, those who drank alcohol exhibited impairments in associative memory and anxiety-like behaviors, suggesting a high vulnerability of rat developing brain to these socially relevant agents.
References
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Book
Using multivariate statistics
TL;DR: In this Section: 1. Multivariate Statistics: Why? and 2. A Guide to Statistical Techniques: Using the Book Research Questions and Associated Techniques.
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