Influence of respiratory activity on the cardiac response pattern to mental effort
Influence of respiratory activity on the cardiac response pattern to mental effort
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DOI：
10.1017/s0048577298961418
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发表时间：
1998-07-01
期刊：
影响因子：
3.7
通讯作者：
Minderaa, RB
中科院分区：
文献类型：
--
作者：
Althaus, M;Mulder, LJM;Minderaa, RB
一组32名健康的成年志愿者完成了三个反应时间任务，不同程度的控制处理负荷。每个任务块之前都有一个休息期。任务块以认知负荷增加或减少的顺序呈现。对于每一个SIP周期，计算心率和呼吸变异性的平均值和光谱测量值。获得了三个不同频段的频谱测量。任务和先前的休息时间的心脏措施之间的差异进行了比较，在任务负荷和任务介绍的顺序的差异。所有比较均在相应频带中调整呼吸变异性的同时进行。任务负荷相关的心率变异性变化变得明显的频带似乎取决于个人的呼吸模式。
A group of 32 healthy adult volunteers completed three blocks of a reaction time task that varied in the degree of controlled processing load. A rest period preceded each of the task blocks. The task blocks were presented in the order of either increasing or decreasing cognitive load. For each of the sip periods, mean values and spectral measures of heart rate and respiration variability were calculated. The spectral measures were obtained for three different frequency bands. Differences between the cardiac measures of the task and preceding rest periods were compared with respect to differences in task load and the order of task presentation. All comparisons were carried out while adjusting for respiratory variability in the corresponding frequency band. The frequency band in which task load-related changes in heart rate variability became manifest appeared to be dependent on the individual's breathing pattern.