[KongchangAI]
Unverified85% confidenceFactTime unknown

纯手机麦克风+加速度计监测的APP(如Sleep Cycle)睡眠分期准确率约60-70%,无法区分深睡与REM,只能用于趋势参考;需要相对准确分期应搭配带PPG心率+血氧的可穿戴设备(如手环/戒指)

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