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Tytuł:
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Hearing and performance during a 70-h exposure to noise simulating the space station environment.
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Autorzy:
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Abel SM; Defence Research and Development Canada-Toronto, Human Factors Research and Engineering Section, DRDC Toronto, P.O. Box 2000, 1133 Sheppard Ave. West, Toronto, Ont., Canada M3M 3B9. />Crabtree B
Baranski JV
Smith DG
Thompson MM
Steeneken HJ
Verhave JA
Buckey JC
Alvarenga DL
Comtois JM
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Źródło:
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Aviation, space, and environmental medicine [Aviat Space Environ Med] 2004 Sep; Vol. 75 (9), pp. 764-70.
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Typ publikacji:
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Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.
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Język:
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English
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Imprint Name(s):
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Publication: <2005- > : Alexandria Va : Aerospace Medical Association
Original Publication: Washington, Aerospace Medical Assn.
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MeSH Terms:
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Noise*
Space Flight*
Auditory Threshold/*physiology
Hearing/*physiology
Psychomotor Performance/*physiology
Adult ; Atmosphere Exposure Chambers ; Female ; Humans ; Male ; Middle Aged ; Psychoacoustics ; Space Simulation ; Surveys and Questionnaires ; Time Factors
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Contributed Indexing:
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Investigator: JC Buckey, Dartmouth Coll, Hanover, NH
Keywords: NASA Discipline Space Human Factors; Non-NASA Center
Note: Grant numbers: NASA NAF9-1387.
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Entry Date(s):
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Date Created: 20041006 Date Completed: 20041221 Latest Revision: 20151119
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Update Code:
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20240104
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PMID:
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15460627
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Introduction: Elevated hearing thresholds have been documented in some astronauts after long-term spaceflights although noise levels were lower than those normally associated with noise-induced hearing loss in ground-based operations. The present study was conducted to determine whether prolonged exposure (70 h) to levels (72 dBA) recorded on the International Space Station (ISS) service module would impact diverse measures of auditory function, as well as cognition and memory, motivation, and cardiovascular function.
Method: Five mixed gender subgroups of five normal-hearing subjects, aged 20-50 yr, were sequestered for 70 h in an environment that modeled conditions on the ISS. They were assigned to one of three background conditions: quiet (n = 5), continuous noise from the ISS service module (n = 10), or continuous noise during the day only (n = 10). Subjects were tested repeatedly within and across days as individuals or pair mates.
Results: There were no negative effects of the noise on any of the outcome measures. Introduction of a delay or noise in a communication channel used in the assessment of speech communicability significantly affected the time taken for joint problem solving by partners.
Discussion: The results of this study were not consistent with the observation of hearing loss measured after spaceflights. Nor were changes evident in cognition, motivation, or cardiovascular function. Factors which might account for the discrepancy are discussed.