Sherwood A, Turner J R, Light K C, Blumenthal J A
Department of Psychiatry, University of North Carolina, Chapel Hill 27599.
Int J Psychophysiol. 1990 Nov;10(1):95-8. doi: 10.1016/0167-8760(90)90050-n.
Cardiovascular responses to a competitive reaction-time task were monitored in 13 male subjects tested twice, 3 months apart. The temporal stability of blood pressure responses was in line with previous reports. However, in this study impedance cardiography permitted the investigation of the hemodynamic adjustments underlying the observed blood pressure responses. Analyses revealed that cardiac output and total peripheral resistance responses displayed temporal stability, indicating that subjects' blood pressure responses on the two occasions were the result of similar hemodynamic responses. These data thus extend the literature by demonstrating that the hemodynamic response pattern itself represents a stable individual difference variable.
对13名男性受试者进行了两次测试，间隔3个月，监测他们在一项竞争性反应时间任务中的心血管反应。血压反应的时间稳定性与先前的报告一致。然而，在本研究中，阻抗心动图有助于研究观察到的血压反应背后的血流动力学调节。分析表明，心输出量和总外周阻力反应表现出时间稳定性，这表明受试者在两次测试中的血压反应是相似血流动力学反应的结果。因此，这些数据通过证明血流动力学反应模式本身代表一个稳定的个体差异变量，扩展了相关文献。
