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提出了基于脑电生物反馈技术对失眠障碍患者进行康复训练的非药物康复治疗方法.设计出利用脑电模拟前端芯片ADS1299的脑电信号(EEG)采集装置,采用了QT和MATLAB混合编译完成脑电信号的预处理及利用小波变换分解出的α波特征信号表征大脑状态,通过音视频将当前脑状态信号反馈给患者,根据量化指标对应的康复方案,指导失眠障... 相似文献
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《Ergonomics》2012,55(4):353-365
The results of subjective quality-grading tests aro affected by ‘ adaptation ’ in the sense that observers become more critical when the quality of the tost material is generally high, and vice versa- The phenomenon has been investigated for tests with television pictures impaired by random noise and by a long-delayed echo. The magnitude of the effect of adaptation as a function of the ‘ conditioning situation ’ is described in terms of ‘ adaptation coefficients ’; it is greater for random noise. 相似文献
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Unwind is a musical biofeedback interface which combines nature sounds and sedative music into a form of New-Age music for relaxation exercises. The nature sounds respond to the user’s physiological data, functioning as an informative layer for biofeedback display. The sedative music aims to induce calmness and evoke positive emotions. UnWind incorporates the benefits of biofeedback and sedative music to facilitate deep breathing, moderate arousal, and promote mental relaxation. We evaluated Unwind in a 2?×?2 factorial experiment with music and biofeedback as independent factors. Forty young adults performed the relaxation exercise under one of the following conditions after experiencing a stressful task: Nature sounds only (NS), Nature sounds with music (NM), and Auditory biofeedback with nature sounds (NSBFB), and UnWind musical biofeedback (NMBFB). The results revealed a significant interaction effect between music and biofeedback on the improvement of heart rate variability. The combination of music and nature sounds also showed benefits in lowering arousal and reducing self-report anxiety. We conclude with a discussion of UnWind for biofeedback and the wider potential of blending nature sounds with music as a musical interface. 相似文献
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《Displays》2023
In recent years, hybrid biofeedback systems utilizing user-controlled electrically tunable lenses have emerged as potential treatments for presbyopia. However, the controllability of these systems, closely linked to user adaptability, has received limited attention in the literature due to the challenges associated with obtaining a comprehensive system model. In this study, we present the design, implementation, and validation of an innovative experimental setup aimed at researching and evaluating the controllability of such a biofeedback system. Our setup incorporates a novel low-complexity model, considering the brain, natural lenses (e.g., the crystalline lens), and electrically tunable lenses, to establish a fundamental model for hybrid biofeedback systems. This model is developed based on an analysis of biofeedback systems, geometrical optics, and control theory, facilitating the identification of strategies to decouple system dynamics and enable precise controllability analysis. The proposed experimental setup was validated with volunteers, providing evidence that confirms the reliable operation of the biofeedback system. Our approach encourages a shift from conventional qualitative approaches toward quantitative evaluation of biofeedback devices. The proposed model and experimental setup hold the potential to statistically assess the controllability of hybrid biofeedback systems for correcting presbyopia, paving the way for further advancements in this field. 相似文献
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目的 比较凯格尔训练与排便训练两种生物反馈模式治疗盆底失弛缓型便秘的临床疗效。方法 将68例符合纳入标准的患者按照随机数字表法分为治疗组和对照组,每组34例。治疗组采用凯格尔训练模式,对照组采用排便训练模式。两组均连续治疗一个月后,观察各自的临床疗效、便秘症状严重程度积分情况及生活质量积分情况,并对其进行统计比较。结果 治疗组总有效率为73.53％,对照组总有效率为44.12％,两组比较有统计学差异(P<0.05)。治疗后治疗组排便费力、排便不尽感、排便时间、如厕未排次数积分低于对照组,差异有统计学意义(P<0.05)。治疗后治疗组生活质量各项因子积分低于对照组,差异有统计学意义(P<005)。结论 凯格尔训练模式治疗盆底失弛缓型便秘的疗效优于排便训练模式,更能改善便秘患者的临床症状、提高患者的生活质量。 相似文献