Sebastiani L, Simoni A, Gemignani A, Ghelarducci B, Santarcangelo E L
Dipartimento di Fisiologia e Biochimica, Via S. Zeno 31, 56127 Pisa, Italy.
Arch Ital Biol. 2005 Feb;143(1):1-12.
In the present experiment the instruction to relax was given to awake highly (Highs) and non hypnotizable subjects (Lows), while their heart rate, respirogram and skin resistance were recorded together with electroencephalogram, electroculogram and corrugator electromiogram. At the beginning of the experiment, Highs exhibited no significant difference in heart rate (HR), respiratory frequency (RF) and heart rate variability (HRV) with respect to Lows, but showed a higher EEG alpha and theta1 power. During the session, both groups decreased their heart rate, but changes were significant only in Lows, which increased significantly also the parasympathetic component of their HRV (high frequency, HF). In both groups, EEG showed alpha, beta2 and theta2 power decrements; theta1 activity decreased only in Lows, while gamma power increased in Highs and decreased in Lows. Results suggest that Highs and Lows used different cognitive strategies in the elaboration of the relaxation request and that Highs performed the task through a higher integrative activity.
在本实验中，向清醒的高催眠易感性（Highs）和非催眠性受试者（Lows）发出放松指令，同时记录他们的心率、呼吸图和皮肤电阻，以及脑电图、眼电图和皱眉肌肌电图。在实验开始时，Highs在心率（HR）、呼吸频率（RF）和心率变异性（HRV）方面与Lows没有显著差异，但显示出较高的脑电图α波和θ1波功率。在实验过程中，两组的心率均下降，但仅Lows组的变化具有显著性，其HRV的副交感神经成分（高频，HF）也显著增加。在两组中，脑电图均显示α波、β2波和θ2波功率下降；θ1活动仅在Lows组中减少，而γ波功率在Highs组中增加，在Lows组中减少。结果表明，Highs和Lows在处理放松要求时使用了不同的认知策略，并且Highs通过更高的整合活动来完成任务。
