Parrot J, Petiot J C
C R Seances Soc Biol Fil. 1981;175(3):330-6.
Eighteen female undergraduate subjects were submitted three times to an intermittent 55 min. pink-noise made of 6 x 5 min. periods at 103 dB (A), alternating with 5 x 5 min periods at 40 dB (A). Arterial blood-pressure was measured by the auscultatory method during the last minute before each noise-step (initial value) and during the first minute following it. Concomitant values of heart-rate (continuously recorded) were also taken into account in the same way. Arterial blood pressure as well as heart-rate homeostatic response to both types of noise-steps obey the Law of initial value, respectively in 38 p. 100 and 33 p. 100 of the cases, but the Law fails to reveal adaptive changes in responses from the first to the third exposure to acoustical stress.
18名女大学生受试者接受了3次间歇性55分钟的粉红噪声刺激，该噪声由6个5分钟时长、强度为103分贝（A）的时段组成，与5个5分钟时长、强度为40分贝（A）的时段交替出现。在每次噪声变化前的最后一分钟（初始值）以及变化后的第一分钟，通过听诊法测量动脉血压。同时，以同样的方式记录心率的相应值。动脉血压以及心率对两种噪声变化的稳态反应分别在38%和33%的情况下遵循初始值定律，但该定律未能揭示从第一次到第三次受到声学应激时反应的适应性变化。
