Schandry R, Sparrer B, Weitkunat R
Int J Neurosci. 1986 Nov;30(4):261-75. doi: 10.3109/00207458608985677.
Heartbeat perception has become the most widely studied example of visceral perception. In the present study scalp potentials contingent to the visceral event "heartbeat" were investigated. Scalp potentials, averaged time-locked to the EKG-R-wave, were studied at Fz, Cz, and Pz under four conditions: resting (baseline), heartbeat discrimination task, signal detection task, and heartbeat discrimination task after physical exercise. 22 subjects were assigned to the two groups "good" and "poor" perceivers, according to their performance in an initial heartbeat perception test. Event related potentials (ERPs) of "good" perceivers were more stable across conditions than those of "poor" perceivers. Peak latency within the range of 200 to 300 ms differed significantly between conditions. A principal component analysis performed on the ERP averages extracted five components. Subsequent ANOVAs across factor scores yielded significant main effects for the "groups" factor, experimental conditions and electrode sites. The strongest effects occurred over the frontal region in the latency range of 250-400 ms (following the EKG-R-wave). These were found to be not due to artifactual EKG influences.
心跳感知已成为内脏感知领域中研究最为广泛的实例。在本研究中，对与内脏事件“心跳”相关的头皮电位进行了研究。在四种条件下，对在Fz、Cz和Pz部位记录到的、与心电图R波锁时平均的头皮电位进行了研究：静息（基线）、心跳辨别任务、信号检测任务以及体育锻炼后的心跳辨别任务。根据22名受试者在初始心跳感知测试中的表现，将他们分为“良好”和“较差”感知者两组。“良好”感知者的事件相关电位（ERP）在不同条件下比“较差”感知者的更稳定。不同条件下，200至300毫秒范围内的峰值潜伏期存在显著差异。对ERP平均值进行的主成分分析提取出五个成分。随后对各因素得分进行的方差分析显示，“组”因素、实验条件和电极部位存在显著的主效应。最强的效应出现在额区，潜伏期范围为250 - 400毫秒（紧跟心电图R波之后）。这些效应并非由心电图的人为影响所致。
