Heart-rate and blood-pressure variability during psychophysiological tasks involving speech: Influence of respiration
Heart-rate and blood-pressure variability during psychophysiological tasks involving speech: Influence of respiration
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DOI：
10.1111/j.1469-8986.2007.00542.x
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发表时间：
2007-09-01
期刊：
影响因子：
3.7
通讯作者：
Simpson, David M.
中科院分区：
文献类型：
--
作者：
Beda, Alessandro;Jandre, Frederico C.;Simpson, David M.
心率和收缩期动脉压变异性（H RV和SAPV）指数的变化已被用于心理生理学评估自主神经激活，包括在涉及语音的任务期间。目前的文章清楚地表明，在25名成年受试者的样本中，不稳定和宽带呼吸模式在这些任务违反了通常的假设，呼吸是有限的高频带（0.15-0.4赫兹）。对于这些任务，个体间的差异和休息任务的变化，在低频段（0.04-0.15 Hz）的HRV和SAPV可以解释，在很大程度上，在呼吸量信号的变化。这使得在这些任务中使用HRV和SAPV作为自主神经功能的标志物非常值得怀疑。此外，确定了一些静息时呼吸周期较长的受试者，其在样本中的存在可能会使基线静息值的估计发生偏倚。
Changes in heart-rate and systolic arterial pressure variability (H RV and SAPV) indexes have been used in psychophysiology to assess autonomic activation, including during tasks involving speech. The current article clearly demonstrates in a sample of 25 adult subjects that the erratic and broadband respiratory patterns during such tasks violate the usual assumption that respiration is limited to the high-frequency band (0.15-0.4 Hz). For these tasks, interindividual differences and rest-task changes in HRV and SAPV in the low-frequency band (0.04-0.15 Hz) can be explained, to a large extent, by variations in the respiratory volume signal. This makes the use of HRV and SAPV as markers of autonomic function during these tasks highly questionable. Furthermore, a number of subjects with long respiratory period at rest were identified, whose presence in the sample can bias the estimation of baseline rest values.