Abstract
Objective
Early researches found that different heartbeat perceivers have different heartbeat evoked potential (HEP) waves. Two tasks were considered in our experiments to get more details about the differences between good and poor heartbeat perceivers at attention and resting state.
Methods
Thirty channels of electroencephalogram (EEG) were recorded in 22 subjects, who had been subdivided into good and poor heartbeat perceivers by mental tracking task. Principal component analysis (PCA) was applied to remove cardiac field artifact (CFA) from the HEP.
Results
(1) The good heart-beat perceivers showed difference between attention and resting state in the windows from 250 ms to 450 ms after R wave at C3 location and from 100 ms to 300 ms after R wave at C4 location; (2) The difference waveforms between good and poor heartbeat perceivers was a positive waveform at FZ from 220 ms to 340 ms after R wave, which was more significant in attention state.
Conclusion
Attention state had more effect on the HEPs of good heartbeat perceivers than that of poor heartbeat perceivers; and perception ability influenced HEPs more strongly in the attention state than in the resting state.
Keywords: heartbeat perception, heartbeat evoked potential, cardiac field artifact, principal component analysis
摘要
目的
早期研究发现心跳感知能力不同的人其心跳诱发脑电位 (heartbeat evoked potential, HEP) 存在差异。本文设计两个实验以对比研究在关注状态和静息状态下, 心跳感知能力强和心跳感知能力弱的人 HEP 的具体差异。
方法
采集 22 名被试者的30 通道的脑电波, 通过精神跟踪方法将被试者分为心跳感知能力强和感知能力弱两组。 使用主成分分析方法去除掺杂在 HEP 中的心电场伪迹。
结果
(1) 对于心跳感知能力强的被试者, 关注状态和静息状态的 HEP 存在着差异。差异主要体现在C3处心电R波后 250–450 ms 和C4处心电R波后 100–300 ms。 (2) 感知能力强和感知能力弱的被试者的 HEP 差异波主要体现为FZ处心电R波后220–340 ms的一个正波, 在关注状态下: 这种差异更明显。
结论
关注因素可能更容易影响心跳感知能力强的被试者?在关注状态: 感知能力对 HEP 的影响更为明显。
关键词: 心跳感知, 心跳诱发脑电位, 心电场伪迹, 主成分分析
References
- [1].Critchley H.D., Wiens S., Rotshtein P., Ohman A., Dolan R.J. Neural systems supporting interoceptive awareness. Nat Neurosci. 2004;7:189–195. doi: 10.1038/nn1176. [DOI] [PubMed] [Google Scholar]
- [2].Jones G.E., Leonberger T.F., Rouse C.H., Caldwell J.A., Jones K.R. Preliminary data exploring the presence of an evoked potential associated with cardiac visceral activity. Psychophysiology. 1986;23:445. [Google Scholar]
- [3].Schandry R., Sparrer B., Weitkunat R. From the heart to the brain: A study of heartbeat contingent scalp potentials. Int J Neurosci. 1986;30:261–275. doi: 10.3109/00207458608985677. [DOI] [PubMed] [Google Scholar]
- [4].Montoya P., Schandry R., Muller A. Heartbeat-evoked potentials (HEP): topography and influence of cardiac awareness and focus of attention. Electroencephalogr Clin Neurophysiol. 1993;88:163–172. doi: 10.1016/0168-5597(93)90001-6. [DOI] [PubMed] [Google Scholar]
- [5].Schandry R., Weitkunat R. Enhancement of heartbeat-related brain potentials through cardiac awareness training. Int J Neurosci. 1990;53:234–253. doi: 10.3109/00207459008986611. [DOI] [PubMed] [Google Scholar]
- [6].Schandry R., Montoya P. Event-related brain potentials and the processing of cardiac activity. Biol Psychol. 1996;42:75–85. doi: 10.1016/0301-0511(95)05147-3. [DOI] [PubMed] [Google Scholar]
- [7].Pollatos O., Kirsch W., Schandry R. Brain structures involved in interoceptive awareness and cardioafferent signal processing: a dipole source localization study. Hum Brain Mapp. 2005;26:54–64. doi: 10.1002/hbm.20121. [DOI] [PMC free article] [PubMed] [Google Scholar]
- [8].Pollatos O., Kirsch W., Schandry R. On the relationship between interoceptive awareness, emotional experience, and brain processes. Brain Res Cogn Brain Res. 2005;25:948–962. doi: 10.1016/j.cogbrainres.2005.09.019. [DOI] [PubMed] [Google Scholar]
- [9].Knoll J.F., Hodapp V. A comparison between two methods for assessing heartbeat perception. Psychophysiology. 1992;29:218–222. doi: 10.1111/j.1469-8986.1992.tb01689.x. [DOI] [PubMed] [Google Scholar]
- [10].Phillips G.C., Jones G.E., Rieger E.J., Snell J.B. Effects of the presentation of false heart rate feedback on the performance of two common heartbeat-detection tasks. Psychophysiology. 1999;36:504–510. doi: 10.1017/S0048577299980071. [DOI] [PubMed] [Google Scholar]
- [11].Ring C., Brener J. Influence of beliefs about heart rate and actual heart rate on heartbeat counting. Psychophysiology. 1996;33:541–546. doi: 10.1111/j.1469-8986.1996.tb02430.x. [DOI] [PubMed] [Google Scholar]
- [12].Acosta A., Pegalajar J. Facilitation of heartbeat self-detection in a choice task. Psychophysiology. 2003;47:139–146. doi: 10.1016/S0167-8760(02)00121-6. [DOI] [PubMed] [Google Scholar]
- [13].Dirlich G., Vogl L., Plaschke M., Strian F. Cardiac field effects on the EEG. Electroencephalogr Clin Neurophysiol. 1997;102:307–315. doi: 10.1016/S0013-4694(96)96506-2. [DOI] [PubMed] [Google Scholar]
- [14].Perez J.J., Guijarro E., Barcia J.A. Suppression of the cardiac electric field artifact from the heart action evoked potential. Med Biol Eng Comput. 2005;43:572–581. doi: 10.1007/BF02351030. [DOI] [PubMed] [Google Scholar]
- [15].Pollatos O., Schandry R. Accuracy of heartbeat perception is reflected in the amplitude of the heartbeat-evoked brain potential. Psychophysiology. 2004;41:476–482. doi: 10.1111/1469-8986.2004.00170.x. [DOI] [PubMed] [Google Scholar]