Department of Biomedical Engineering, Shahed University , Tehran, Iran.
Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa , Italy.
Int J Clin Exp Hypn. 2020 Jul-Sep;68(3):306-326. doi: 10.1080/00207144.2020.1762196. Epub 2020 Jun 8.
This study examined hypnotizability-related modulation of the cortical network following expected and nonexpected nociceptive stimulation. The electroencephalogram (EEG) was recorded in 9 high () and 8 low () hypnotizable participants receiving nociceptive stimulation with (W1) and without (noW) a visual warning preceding the stimulation by 1 second. W1 and noW were compared to baseline conditions to assess the presence of any later effect and between each other to assess the effects of expectation. The studied EEG variables measured local and global features of the cortical connectivity. With respect to lows, highs exhibited scarce differences between experimental conditions. The hypnotizability-related differences in the later processing of nociceptive information could be relevant to the development of pain-related individual traits. Present findings suggest a lower impact of nociceptive stimulation in highs than in lows.
本研究考察了在预期和非预期疼痛刺激后，催眠易感性相关的皮质网络调制。在 9 名高（）和 8 名低（）催眠易感性参与者中记录脑电图（EEG），他们在 1 秒前接受疼痛刺激，同时（W1）和不接受（noW）视觉警告。将 W1 和 noW 与基线条件进行比较，以评估是否存在后期效应，并将彼此进行比较，以评估预期的影响。研究中测量了 EEG 变量的皮质连接的局部和全局特征。与低催眠易感性者相比，高催眠易感性者在实验条件之间表现出很少的差异。疼痛信息后期处理的催眠易感性相关差异可能与疼痛相关个体特征的发展有关。目前的研究结果表明，在高催眠易感性者中，疼痛刺激的影响低于低催眠易感性者。
