Cortical activation patterns of electrical pain stimulation using fNIRS

Inhwa Han, Sang-Hwa Won, Yungeui Kang, Kyungseok Oh, Kye-Yoep Kim, Janghwan Jekal, S. Jin, Gihyoun Lee, Seung Tae Yang, Seon Yoon Jung, J. An
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引用次数: 5

Abstract

Until recently, pain assessment has largely relied on subjective self-reports such as questionnaires or VAS. This paper attempts to objectively quantify pain from a neurological point of view through the characteristics of cerebral hemodynamics. Functional near-infrared spectroscopy (fNIRS) measures cortical blood flow changes during electrical pain stimulation. The selected feature of pain measure is the concentration change of oxygenated hemoglobin. Cortical activation patterns and time-series analysis for region of interest shows that premotor cortex and primary motor cortex as well as somatosensory cortex are involved in pain perception. These results are consistent with the findings of fMRI studies on physical pain. Oxygenated hemoglobin is therefore likely to be a quantitative biomarker of pain.
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fNIRS电痛觉刺激的皮层激活模式
直到最近,疼痛评估在很大程度上依赖于主观的自我报告,如问卷调查或VAS。本文试图通过脑血流动力学的特点,从神经学的角度客观地量化疼痛。功能性近红外光谱(fNIRS)测量电刺激疼痛时皮质血流的变化。疼痛测量选择的特征是氧合血红蛋白的浓度变化。对感兴趣区域的皮层激活模式和时间序列分析表明,运动前皮层、初级运动皮层和躯体感觉皮层参与疼痛感知。这些结果与功能性磁共振成像对身体疼痛的研究结果一致。因此,氧合血红蛋白可能是疼痛的定量生物标志物。
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