Temporal strategy for discriminating noxious from non-noxious electrical stimuli by cortical and thalamic neural ensembles in rats
Wang, Jin-Yan1; Chang, Jing-Yu2; Woodward, Donald J.2; Luo, Fei1; F. Luo
2008-04-18
发表期刊NEUROSCIENCE LETTERS
ISSN0304-3940
文章类型Article
卷号435期号:2页码:163-168
摘要Considerable evidence supports that pain is encoded in a large, widespread network that consists of the thalamus, cortex, as well as limbic system. However, the temporal properties of the neural matrix in pain processing were largely unknown. In the present study, we simultaneously recorded thalamic and cortical neuronal discharges elicited by brief noxious or innocuous electrical stimulus in awake rats. The discrimination performance of the neural ensembles in differentiating noxious from innocuous inputs was calculated using different window sizes at the millisecond and second level, respectively. The results demonstrated that coding information emerged in a quantum-like manner; the minimum spike-train length for discriminating noxious from innocuous inputs was 40 ms. The nociceptive coding activity was temporally dynamic, and could be preserved for a relatively long time (3-4 s) within the thalamocortical loops, independent of the initial brief stimuli. These results suggest that the nociceptive signals may be reverberatory within the thalamocortical loops, hence keeping the neurosignature for central pain representation.; Considerable evidence supports that pain is encoded in a large, widespread network that consists of the thalamus, cortex, as well as limbic system. However, the temporal properties of the neural matrix in pain processing were largely unknown. In the present study, we simultaneously recorded thalamic and cortical neuronal discharges elicited by brief noxious or innocuous electrical stimulus in awake rats. The discrimination performance of the neural ensembles in differentiating noxious from innocuous inputs was calculated using different window sizes at the millisecond and second level, respectively. The results demonstrated that coding information emerged in a quantum-like manner; the minimum spike-train length for discriminating noxious from innocuous inputs was 40 ms. The nociceptive coding activity was temporally dynamic, and could be preserved for a relatively long time (3-4 s) within the thalamocortical loops, independent of the initial brief stimuli. These results suggest that the nociceptive signals may be reverberatory within the thalamocortical loops, hence keeping the neurosignature for central pain representation. (c) 2008 Elsevier Ireland Ltd. All rights reserved.
关键词cortex electrical stimulation neural ensemble pain processing spike train
学科领域认知神经科学
收录类别SCI
语种英语
WOS记录号WOS:000255431500016
引用统计
文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/5729
专题中国科学院心理研究所回溯数据库(1956-2010)
通讯作者F. Luo
作者单位1.Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing 100101, Peoples R China
2.Neurosci Res Inst, Winston Salem, NC USA
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Wang, Jin-Yan,Chang, Jing-Yu,Woodward, Donald J.,et al. Temporal strategy for discriminating noxious from non-noxious electrical stimuli by cortical and thalamic neural ensembles in rats[J]. NEUROSCIENCE LETTERS,2008,435(2):163-168.
APA Wang, Jin-Yan,Chang, Jing-Yu,Woodward, Donald J.,Luo, Fei,&F. Luo.(2008).Temporal strategy for discriminating noxious from non-noxious electrical stimuli by cortical and thalamic neural ensembles in rats.NEUROSCIENCE LETTERS,435(2),163-168.
MLA Wang, Jin-Yan,et al."Temporal strategy for discriminating noxious from non-noxious electrical stimuli by cortical and thalamic neural ensembles in rats".NEUROSCIENCE LETTERS 435.2(2008):163-168.
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