Alterations in cognitive performance during passive hyperthermia are task dependent.
Alterations in cognitive performance during passive hyperthermia are task dependent.
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DOI：
10.3109/02656736.2010.516305
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
El Massioui F
中科院分区：
文献类型：
--
作者：
Gaoua N;Racinais S;Grantham J;El Massioui F
本研究的目的是（1）评估被动加热对注意力和记忆任务表现的影响，以及（2）评估对头部应用冰袋对保护这些功能的有效性。使用平衡设计，16名受试者接受了三项试验：对照（CON，20°C，40%rH），热（HOT，50°C，50%rH）和头部保持凉爽的热（HHC）。在每种情况下，进行三次注意力测试和两次记忆力测试。HOT（分别为38.6° ±0.1°、39.6° ±0.2°和38.8°±0.1°C）和HHC（分别为38°±0.2、37.7°±0.3°和37.7°C）期间的平均核心、前额和鼓膜温度均显著高于CON（分别为37.1°±0.6°、33.3° ±0.2°和35.9°±0.3°C）（p< 0.05）。结果表明，热暴露对工作记忆有损害（P < 0.05），但注意过程无改变。定期使用冰袋只能防止高温对短期记忆的不利影响。我们的研究结果表明，认知功能与被动热疗和头部冷却的有益效果的损害是任务依赖性的，并表明，暴露在一个炎热的环境是一个竞争变量的认知过程。
The objectives of this study were to (1) assess the effect of passive heating upon attention and memory task performance, and (2) evaluate the effectiveness of the application of cold packs to the head on preserving these functions. Using a counterbalance design 16 subjects underwent three trials: a control (CON, 20°C, 40% rH), hot (HOT, 50°C, 50% rH) and hot with the head kept cool (HHC). In each condition, three attention tests and two memory tests were performed. Mean core, forehead and tympanic temperatures were all significantly higher (p< 0.05) during HOT (38.6° ±0.1°, 39.6° ±0.2° and 38.8°±0.1°C, respectively) and HHC (38°±0.2, 37.7°±0.3° and 37.7°C, respectively) than in CON (37.1°±0.6°, 33.3° ±0.2° and 35.9°±0.3°C, respectively). Results indicate that there was impairment in working memory with heat exposure (p < 0.05) without alteration in attentional processes. The regular application of cold packs only prevented the detrimental effect of hyperthermia on short-term memory. Our results show that impairments in cognitive function with passive hyperthermia and the beneficial effect of head cooling are task dependent and suggests that exposure to a hot environment is a competing variable to the cognitive processes.
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影响因子：
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DOI：
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发表时间：
1980-01-01
期刊：
ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY
影响因子：
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作者：
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