心算对内外倾者的心率、T波幅度和呼吸频率的影响

该文旨在探讨内、外倾者在三种不同难度心算时，心率、Ｔ波幅度、呼吸频率变化的差异。通过艾森克个性问卷筛选出１５名内倾者和１５名外倾者作为被试，让其完成三种不同难度的心算任务。实验结果表明，心算时两组被试心率均显著上升，内倾组上升幅度大于外倾组；Ｔ波幅度显著降低，内倾组降低幅度大于外倾组但差异不显著；呼吸频率显著上升，但两组上升幅度差异不显著。此外，从心率变化上看，两组被试对心算均表现出适应，内倾组的适应速度比外倾组慢。本实验表明，焦虑性精神紧张比智力操作性精神紧张对心率的影响更大。

PRELIMINARY STUDY ON THE EFFECTS OF VARIOUSDIFFICULT MENTAL ARITRHMETIC ON HEARTRATE T-WAVE AND RESPIRATION IN INTROVERTSAND EXTROVERTS

The present study is a further research of the difhrenon in the changes of Heart Ratej T - wave Amplitude and Respintory Fmquency between introverb and extroverts doing mental arithmetic of three different difficulty levels. 15 introverts and 15 extroverts scmened by Eysenck Penonality Quesdonnaire served as subjects and were nquind to fin- ish the mental a.thmetic of three diffrent diffculty levels. The .result showed that the heart rate of the subjects of both groups increased significantly, while the increasing magnitute of the introverb were greater than the extroverb: the T - wave amplitute decreased significantly while the decreasing magnitude of the introverts were greater than the extroverts, the differ ence was not significant though: the respiratory fhquency increawd signifiantly, but the dif ference of the increasing magnitude between the two groups was not significant. lksides, from the chang. of the heart rate we can see that both of the two groups showed adap. tation to the mental arithmetics, but the adapting speed of the introverts was slower than the extroverts. This experiment suggested that anxiety - induced stress had greater effect on heart rate than intellectual performance stress.