Unverified78% confidenceDecision RuleTime unknown
采样率是易被忽略的核心参数：消费级冥想头环普遍为125-256Hz已够用，但若宣称能做睡眠分期（区分REM/深睡）应确认≥250Hz且带阻抗检测功能
1
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78%
Confidence
Long-term
Relevance
-
First Seen
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Unverified追求睡眠分期精度（区分深睡/浅睡/REM）应选带PPG光学心率+加速度计的方案，仅靠体动检测的仪器只能判断睡/醒，分期误差可达30%以上85% similarUnverified非接触式雷达/床垫型监测仪的睡眠分期（深睡/浅睡/REM）准确率普遍低于70%，仅适合看趋势；追求分期准确度应选PSG（多导睡眠图）或经过临床验证的头戴式脑电（EEG）设备85% similarUnverified监测睡眠分期需至少单通道EEG（脑电）采样率≥128Hz，仅靠心率+体动的贴片无法准确区分深睡与浅睡，误差可达30%以上84% similarUnverified睡眠阶段（深睡/浅睡/REM）判断精度依赖数据维度：仅靠单一心率/体动的贴片准确率约60-70%，融合呼吸+心率变异（HRV）+体温的多参数贴片可达80%以上，追求阶段准确性应选多参数款82% similarUnverified腕表/环类可穿戴设备的睡眠分期准确率通常仅60-80%，其REM与深睡区分误差较大；若报告完全基于这类设备数据，不宜作为治疗依据，医学诊断需依赖PSG（多导睡眠监测）或HSAT（家庭睡眠呼吸监测）81% similar
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