De Pascalis V, Imperiali M G
Percept Mot Skills. 1984 Oct;59(2):371-8. doi: 10.2466/pms.1984.59.2.371.
22 men and women, students in psychology, were given the Eysenck Personality Questionnaire, also percent theta, alpha and beta EEG spectral powers were evaluated during an hypnotic induction induced according to Barber's method. The EEG performance was compared with two baseline eyes-open, eyes-closed conditions and with a neutral control situation of listening to a weather report. No relation was found between Extraversion-Introversion scores and scores on the Barber Suggestibility Scale. The difference in EEG powers was nonsignificant for groups high and low in suggestibility, while a significant interaction was found for eyes open or closed X suggestibility groups when extreme scores of Extraversion-Introversion and Neuroticism were considered according to Eysenck's (1966) method. The right theta power of the stable extraverts and neurotic introverts, high in susceptibility in eyes-open condition was higher than the neurotic extraverts, and stable introverts who were low in susceptibility to hypnosis. The right theta power of the neurotic extraverts and stable introverts who were low in susceptibility to hypnosis showed a tendency to increase in eyes-closed conditions, while an opposite observation was made for the stable extraverts and neurotic introverts, subjects who were high in susceptibility. It is interesting to notice, according to Galbraith, et al. (1970) that it was the eyes-open condition which yielded the best EEG predictor of hypnotic susceptibility.
22名心理学专业的男女学生接受了艾森克人格问卷测试，同时在按照巴伯方法进行的催眠诱导过程中，对θ波、α波和β波脑电图频谱功率百分比进行了评估。将脑电图表现与两种基线状态（睁眼、闭眼）以及听天气预报的中性对照情况进行了比较。在外向性-内向性得分与巴伯易受暗示性量表得分之间未发现关联。对于易受暗示性高和低的组，脑电图功率差异不显著，而当根据艾森克（1966年）的方法考虑外向性-内向性和神经质的极端得分时，发现睁眼或闭眼×易受暗示性组之间存在显著交互作用。在睁眼状态下易受暗示性高的稳定外向者和神经质内向者的右侧θ波功率高于易受暗示性低的神经质外向者和稳定内向者。对催眠易受暗示性低的神经质外向者和稳定内向者而言，其右侧θ波功率在闭眼状态下有增加趋势，而对于易受暗示性高的稳定外向者和神经质内向者（受试者）则观察到相反情况。根据加尔布雷斯等人（1970年）的研究，有趣的是，睁眼状态产生了催眠易受暗示性的最佳脑电图预测指标。
