Pollatos Olga, Matthias Ellen, Schandry Rainer
Department of Psychology, University of Munich, Leopoldstr. 13, 80802 Munich, Germany.
Clin Neurophysiol. 2007 Oct;118(10):2248-53. doi: 10.1016/j.clinph.2007.06.057. Epub 2007 Aug 20.
The perception of bodily signals ("interoceptive awareness") was found to modulate evoked potential components, especially the P300, in response to emotional pictures and to internal signals. It remains an open question whether this variable is related to more elaborated information processing in general.
The present study investigated the relationship between heartbeat perception and the amplitude of the P300 to target stimuli in a visual oddball paradigm.
Interoceptive awareness was positively correlated with the P300 amplitude at Cz which remained significant after controlling for anxiety differences.
Our results demonstrate a positive relationship between interoceptive awareness and the attentive processing of visual stimuli.
Interoception is related to more elaborated information processing in general. This effect could be mediated by arousal differences and might rely on common neuroanatomical structures.
研究发现，对身体信号的感知（“内感受觉知”）会调节诱发电位成分，尤其是P300，以响应情绪图片和内部信号。这个变量是否总体上与更精细的信息处理相关，仍是一个悬而未决的问题。
本研究在视觉Oddball范式中，调查了心跳感知与P300对目标刺激的波幅之间的关系。
内感受觉知与Cz处的P300波幅呈正相关，在控制焦虑差异后，这种相关性仍然显著。
我们的结果表明，内感受觉知与视觉刺激的注意力处理之间存在正相关关系。
总体而言，内感受与更精细的信息处理相关。这种效应可能由唤醒差异介导，并且可能依赖于共同的神经解剖结构。
