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Effects of Sleep Inertia on Cognitive Functions and Study on Countermeasure of Coffee to Sleep Inertia

Author: HouYanHong
Tutor: HuangFuEn;MiaoDanMin
School: Fourth Military Medical University
Course: Applied Psychology
Keywords: Sleep inertia Sleep Deprivation Nap Nap Cognitive function Coffee
CLC: B842
Type: Master's thesis
Year: 2003
Downloads: 190
Quote: 0
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Abstract


Sleep inertia (SI), also known as sleep inertia, refers to wake up immediately after the period of temporary low alertness, confusion, chaos behavior and cognitive abilities, sensory abilities decline state. Awakening from sleep to excessive state of sleep inertia been incorporated in several models in the sleep - wake-up call to adjust. Nap' dissertation">Nap, similar to the sustained operation of the individual will be a sudden small of their sleep, and called for the immediate operation of complex tasks, the study found that sleep inertia will produce a significant impact on the quality and speed of operation. Sleep deprivation or sleep loss forces especially in an emergency wartime very common phenomenon, and is one of the important factors that lead to the warfighter fatigue failure occurs, hors de combat, there attrition. The nap is as an effective counter-measures to be applied, which requires attention to the occurrence of sleep inertia and job performance. The study from the normal nap paper observed under normal circumstances, the duration of sleep inertia of cognitive function, and screening effective testing tools. 30 Fourth Military Medical school on the basis of this study, further the Shuo ten Dissertation moment sleep deprivation when asked the same biological rhythm, one hour after a nap sleep inertia characteristics of the EEG, cognitive impact, duration, subjective The evaluation of the study, respectively, mainly objective control analysis. And coffee as countermeasures applied research. The study is divided into three parts: the experimental a normal working conditions under the impact of sleep inertia on cognitive function Objective: To investigate the sleep inertia R \: 10 silly Kang young men to participate in the test, The EEG records afternoon asked to sleep condition, wake after sleep nearly one hour, then twice cognitive function series measured Ken, including continuous sum tests, visual mental rotation test, letter cancellation test, working memory tests. Wake-up to instantly quiz 2nd test time interval of 20 minutes, compare two series of tests of cognitive function changes, and whether to return to baseline values, i.e. the normal working state. Results: visual mental rotation tests and letter position working memory test, only in the wake instantly baseline level there is a significant difference (P <0.05); continuous sum tests and letter cancellation test, wake up instantly with the second test value baseline levels have significant differences, while the second Test with the baseline level still can not believe that there are significant differences. Letter the contents of working memory, after wake-up test scores are lower than the baseline level (P <0.05), the wake no significant difference (P> 0.05) between the test scores. Conclusion: Sleep inertia affect cognitive function, and continue for a period of time, may be much greater than that short period of time of 1 to 20 minutes in the past, complex cognitive function than simple tasks. Experiment II sleep deprivation, sleep inertia Objective: To study the impact on cognitive function and mood after 30 hours of sleep deprivation, sleep inertia l hour nap EEG features. Cognitive impact, duration, and subjective evaluation. Methods: 8 healthy young male participants, the EEG recorded the midday sleep condition, wake up after one hour of sleep, then cognitive function series of measurements, including: continuous sum tests, working memory tests, and POMS, VAS. Tested five times, and each time the test time of 10 minutes, the test interval of 20 minutes, the Compare the five series of tests different cognitive function of variation over time, and awake status optimum working Test results comparing the assessment of whether a recovery to the normal working state possible. And take a nap and no-nap group results were compared. Results: 3 Fourth Military Medical master's degree thesis EEG wake-sleep phase 3 deep sleep. The continuous sum test nap group, in wake 1.5 hours with baseline achievements differences significantly lower than baseline levels. In the two hours after the wake-up test time point, is not yet statistically significant differences in baseline achievements. Wake-up test results within one hour in no naps group, the same nap group test point in time, were lower than the baseline value (P <0.05), and the trend is flat. Working memory test, no nap group tests at each time point results are statistically significant difference, the nap group letter the contents of working memory tests, in 1.5 hours after wake-up test scores and baseline scores compared with baseline levels statistically significant difference (P <0.05). The letter position working memory tests in statistically significant differences in test scores and baseline values ??within 0.5 hours in the wake. Well and with gradual increase in scores over time. Two self-rating scale, the POMS in D, V, F, C, index, and VAS alertness \. For naps group and no nap group achievements not yet statistically significant difference. Conclusion: After 30 hours of sleep deprivation, l hour sleep inertia may be logical thinking, working memory, and subjective evaluation impact, but the recovery time of different cognitive tasks, letter position working memory recovery fastest continuous sum test , followed by the letter content working memory recovery slowest, respectively, at least in 0.5 hours, 1.5 hours, 2 hours, there might be restored to the normal working state. Subjective evaluation compared to the early recovery of actual job performance. Experiment 3 30 hours under the conditions of sleep deprivation coffee confrontation sleep inertia measures Objective: To explore coffee confrontation after 30 hours of sleep deprivation, 1 hour nap sleep inertia. Methods: 8 healthy young men, before and after the control itself. For coffee group and the control group. Coffee group 30 hours of sleep deprivation, arrange small before going to bed two hours, taking coffee, the test method with the second part of the results: the coffee group, test scores, test scores only in the wake immediately below the baseline level, with the wake-up time of growth, achievement gradually increased, compared with baseline values ??no difference. While the control group throughout the test point in time basically are below the baseline level o Diao knife Bu trend in the value of each time point measured on the coffee group and the control group with time generally upward trend, but?

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