Was it a pain or a sound? Across-species variability in sensory sensitivity

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	Was it a pain or a sound? Across-species variability in sensory sensitivity
	Hu, Li1,2,3,4 ; Xia, Xiaolei L.1,2; Peng, Weiwei W.1,2; Su, Wenxin X.1,2; Luo, Fei4 ; Yuan, Hong 1,2; Chen, Antao T.1,2; Liang, Meng 3; Iannetti, Giandomenico 3
刊名	PAIN
	2015-12-01
卷号	156 期号:12 页码:2449-2457
关键词	Sensory sensitivity A delta-fibres C-fibres Electroencephalogram (EEG) Rats Humans
ISSN号	0304-3959
英文摘要	Natural selection has shaped the physiological properties of sensory systems across species, yielding large variations in their sensitivity. Here, we used laser stimulation of skin nociceptors, a widely used technique to investigate pain in rats and humans, to provide a vivid example of how ignoring these variations can lead to serious misconceptions in sensory neuroscience. In 6 experiments, we characterized and compared the physiological properties of the electrocortical responses elicited by laser stimulation in rats and humans. We recorded the electroencephalogram from the surface of the brain in freely moving rats and from the scalp in healthy humans. Laser stimuli elicited 2 temporally distinct responses, traditionally interpreted as reflecting the concomitant activation of different populations of nociceptors with different conduction velocities: small-myelinated Ad-fibres and unmyelinated C-fibres. Our results show that this interpretation is valid in humans, but not in rats. Indeed, the early response recorded in rats does not reflect the activation of the somatosensory system, but of the auditory system by laser-generated ultrasounds. These results have wide implications: retrospectively, as they prompt for a reconsideration of a large number of previous interpretations of electrocortical rat recordings in basic, preclinical, and pharmacological research, and prospectively, as they will allow recording truly pain-related cortical responses in rats.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Anesthesiology ; Clinical Neurology ; Neurosciences
研究领域[WOS]	Anesthesiology ; Neurosciences & Neurology
关键词[WOS]	PRIMARY SOMATOSENSORY CORTEX ; LASER-EVOKED-POTENTIALS ; FIELD POTENTIALS ; CO2-LASER STIMULATION ; INFRARED-LASER ; A-DELTA ; STIMULUS SALIENCY ; BRAIN POTENTIALS ; CONSCIOUS RATS ; HEAT STIMULI
收录类别	SCI
语种	英语
WOS记录号	WOS:000365598300010
内容类型	期刊论文
源URL	[http://ir.psych.ac.cn/handle/311026/15361]
专题	心理研究所_中国科学院心理健康重点实验室
作者单位	1.Southwest Univ, Key Lab Cognit & Personal, Minist Educ, Chongqing 400715, Peoples R China 2.Southwest Univ, Fac Psychol, Chongqing 400715, Peoples R China 3.UCL, Dept Neurosci Physiol & Pharmacol, London, England 4.Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Hu, Li,Xia, Xiaolei L.,Peng, Weiwei W.,et al. Was it a pain or a sound? Across-species variability in sensory sensitivity[J]. PAIN,2015,156(12):2449-2457.
APA	Hu, Li.,Xia, Xiaolei L..,Peng, Weiwei W..,Su, Wenxin X..,Luo, Fei.,...&Iannetti, Giandomenico.(2015).Was it a pain or a sound? Across-species variability in sensory sensitivity.PAIN,156(12),2449-2457.
MLA	Hu, Li,et al."Was it a pain or a sound? Across-species variability in sensory sensitivity".PAIN 156.12(2015):2449-2457.