De Pascalis V, Marucci F S, Penna P M
Department of Psychology, University of Rome, La Sapienza, Italy.
Int J Psychophysiol. 1989 Mar;7(1):85-96. doi: 10.1016/0167-8760(89)90034-2.
Sixteen high and thirteen low hypnotizable women, who had participated in our previous study (De Pascalis et al., 1987), were enrolled in a hypnotic session. After the hypnotic induction they were requested to recollect 2 positive and 2 negative personal life experiences. In our previous study subjects performed similar tasks in a waking-state. Hypnotizability was evaluated the first time with the Harvard Group Scale of Hypnotic Susceptibility (Form A) and, a second time, individually, with the Stanford Hypnotic Susceptibility Scale (Form C). The State Trait Anxiety Inventory, Maudsley Personality Inventory, and Tellegen Absorption Scale were administered. Upper-trapezius electromyogram (EMG) and bilateral electroencephalogram (EEG) activities within the 35-45 Hz band were recorded. Self-report rating scores for vividness of visual imagery and emotional feeling of the material recalled were evaluated. The 40-Hz EMG amplitude and the left and right hemisphere 40-Hz EEG densities were obtained. The data collected in hypnosis were compared with those in the waking-state. High hypnotizables, with respect to the lows, displayed significantly lower 40-Hz EEG density in the rest condition. High hypnotizables, while they were in hypnosis, showed an increase of 40-Hz EEG density during emotional recall compared with rest periods. In contrast, low hypnotizables, after hypnotic induction, showed no density change during tasks compared to the rest conditions. Different hemispheric trends were found between groups. Highs showed an increase of 40-Hz EEG density over both hemisphere during positive emotions and a density increase in the right and a density reduction in the left during negative ones. This hemispheric trend was found in waking and hypnotic conditions although in the hypnotic condition more pronounced hemispheric patterns were observed. The Tellegen Absorption Scale was found positively related to hypnotizability and with the level of 40-Hz density increase on the right hemisphere during emotional tasks. High hypnotizables, with respect to the lows, were able to access affects more readily. They also showed a greater hemispheric specificity in waking and hypnotic conditions.
16名高催眠易感性女性和13名低催眠易感性女性参与了我们之前的研究（德帕斯夸利斯等人，1987年），她们参加了一次催眠 session。在催眠诱导后，要求她们回忆2段积极和2段消极的个人生活经历。在我们之前的研究中，受试者在清醒状态下执行类似任务。首次使用哈佛团体催眠易感性量表（A 型）评估催眠易感性，第二次单独使用斯坦福催眠易感性量表（C 型）评估。发放了状态-特质焦虑量表、莫兹利人格量表和泰勒根专注量表。记录了35 - 45赫兹频段内的上斜方肌肌电图（EMG）和双侧脑电图（EEG）活动。评估了所回忆材料的视觉意象生动性和情感感受的自我报告评分。获得了40赫兹EMG振幅以及左右半球40赫兹EEG密度。将催眠状态下收集的数据与清醒状态下的数据进行比较。与低催眠易感性者相比，高催眠易感性者在静息状态下显示出显著更低的40赫兹EEG密度。高催眠易感性者在催眠状态下，与静息期相比，在情感回忆期间显示出40赫兹EEG密度增加。相比之下，低催眠易感性者在催眠诱导后，与静息状态相比，任务期间未显示密度变化。两组之间发现了不同的半球趋势。高催眠易感性者在积极情绪期间两个半球的40赫兹EEG密度增加，在消极情绪期间右半球密度增加而左半球密度降低。这种半球趋势在清醒和催眠状态下均有发现，尽管在催眠状态下观察到更明显的半球模式。发现泰勒根专注量表与催眠易感性以及情感任务期间右半球40赫兹密度增加水平呈正相关。与低催眠易感性者相比，高催眠易感性者能够更容易地触及情感。她们在清醒和催眠状态下也表现出更大的半球特异性。
