Verschuere Bruno, Crombez Geert, Koster Ernst H W, Van Bockstaele Bram, De Clercq Armand
Department of Psychology, Ghent University, Henri Dunantlaan 2, B-9000 Ghent, Belgium.
Biol Psychol. 2007 Sep;76(1-2):52-60. doi: 10.1016/j.biopsycho.2007.06.001. Epub 2007 Jun 22.
We used the startle eye blink paradigm to investigate the processes underlying physiological responding to concealed information. Autonomic responding was measured together with eye blink responses to startle probes presented during mock crime and control pictures. Based upon 'orienting theory', greater startle modulation to crime pictures in comparison to control pictures was expected. The electrodermal, heart rate and respiratory changes in Experiment 1 (n=29) showed enhanced orienting to the crime pictures, but we observed reduced rather than enhanced startle modulation. In Experiment 2 (n=91) and Experiment 3 (n=38), participants either were or were not instructed to inhibit physiological responding in order to test whether inhibition was an explanation for the pattern of startle blink responding. Reduced startle modulation was observed only when participants inhibited physiological responding, confirming the proposed role of inhibition. The data suggest that not only orienting, but also inhibition contributes to physiological responding to concealed information.
我们使用惊吓眨眼范式来研究对隐藏信息进行生理反应的潜在过程。在模拟犯罪图片和对照图片呈现期间，测量自主反应以及对惊吓探针的眨眼反应。基于“定向理论”，预计与对照图片相比，对犯罪图片的惊吓调节会更强。实验1（n = 29）中的皮电、心率和呼吸变化显示对犯罪图片的定向增强，但我们观察到惊吓调节减弱而非增强。在实验2（n = 91）和实验3（n = 38）中，参与者被指示或未被指示抑制生理反应，以测试抑制是否是惊吓眨眼反应模式的一种解释。仅当参与者抑制生理反应时才观察到惊吓调节减弱，证实了所提出的抑制作用。数据表明，不仅定向，而且抑制也有助于对隐藏信息的生理反应。
