Hegerl U, Karnauchow I, Herrmann W M, Müller-Oerlinghausen B
Laboratory of Clinical Psychophysiology, Freie Universität Berlin, FRG.
Neuropsychobiology. 1992;26(3):166-72. doi: 10.1159/000118912.
The slope of the amplitude/stimulus intensity function (ASF) of sensory evoked potentials was found to be related to 'action-oriented' personality traits like 'sensation seeking', 'extraversion', and 'impulsivity'. We studied the ASF slope of the auditory evoked N1/P2 component as well as short-term ASF slope changes and their relationship to a German personality inventory (Freiburger Persönlichkeits-Inventar) in 33 healthy subjects. The ASF slope correlated negatively with 'life contentment' and positively with 'stress' in the first run. Stronger associations, however, were noted between slope changes within one test session and personality. Subjects scoring high on the second-order factor 'aggressive excitability' were characterized by a slope decrease from the first to the second run, following a 20-min interval. This finding of personality-dependent test-retest changes of the ASF slope stresses the importance of monitoring the duration of the recording when studying ASF slopes and offers an explanation for inconsistencies in the literature concerning cross-modal correlations in visual and auditory ASF slopes. The hypothesis is proposed that the serotonergic system, which has been related to 'action-oriented' personality, is involved in the modulation of the intensity dependence of the auditory evoked N1/P2 component.
研究发现，感觉诱发电位的振幅/刺激强度函数（ASF）斜率与“行动导向型”人格特质有关，如“感觉寻求”、“外向性”和“冲动性”。我们在33名健康受试者中研究了听觉诱发电位N1/P2成分的ASF斜率以及短期ASF斜率变化，及其与一份德国人格量表（弗赖堡人格量表）的关系。在第一次测试中，ASF斜率与“生活满意度”呈负相关，与“压力”呈正相关。然而，在一次测试过程中的斜率变化与人格之间的关联更强。在二阶因子“攻击性兴奋性”上得分较高的受试者，其特征是在间隔20分钟后，从第一次到第二次测试时斜率下降。这一人格依赖的ASF斜率重测变化的发现强调了在研究ASF斜率时监测记录时长的重要性，并为视觉和听觉ASF斜率跨模态相关性文献中的不一致提供了解释。我们提出一个假说，即与“行动导向型”人格有关的血清素能系统参与了听觉诱发电位N1/P2成分强度依赖性的调节。
