Unverified80% confidenceDecision RuleTime unknown
采样率是关键指标：脑电有效频率主要在0.5-40Hz，采样率应≥125Hz（消费级冥想类），临床诊断建议≥256Hz，采样率过低会丢失快波（gamma波）信息
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Unverified采样率是波形精度关键，诊断级设备采样率应≥1000Hz/导联，低于250Hz易丢失细微起搏信号和高频成分，起搏器患者需特别关注83% similarUnverified消费级脑电（EEG）设备的电极数量决定可信度：单电极（如前额干电极）仅能做粗略专注度/冥想反馈，若涉及神经反馈训练建议至少4-14通道，且需查看采样率≥256Hz76% similarUnverified多数单导联贴片采样率约250-512Hz，可满足房颤、早搏、心率的自动算法识别，但对P波细节和心室复杂性评估不如12导联Holter精细70% similarUnverified刷新率数值高不等于流畅，需同时看触控采样率（建议≥240Hz）和SoC性能，中端处理器带120Hz在大型游戏中反而更易掉帧发热68% similarUnverified手握式金属电极心率监测误差大(±10bpm以上)且跑动时读数漂移严重，需要准确心率训练的用户应无视机器自带手握心率，改用蓝牙心率带68% similar
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