A comparison between spontaneous electroencephalographic activities induced by morphine and morphine-related environment in rats
Zuo, Yan-Fang; Wang, Jin-Yan; Chen, Ji-Huan; Qiao, Zhi-Mei; Han, Ji-Sheng; Cui, Cai-Lian; Luo, Fei; C. L. Cui; F. Luo
2007-03-09
发表期刊BRAIN RESEARCH
ISSN0006-8993
文章类型Article
卷号1136期号:1页码:88-101
摘要Previous studies demonstrated that drug cues could elicit drug-like or withdrawal-like effect, both subjectively and physiologically. However, few studies have compared the central activities induced by a drug-related environment and the drug itself. The aim of this study was to observe and compare electroencephalographic (EEG) changes induced by acute morphine administration and by the morphine-related environment. EEG activities were recorded via twelve skull electrodes scattered on the left and right cortex in conscious, freely moving rats, either after acute morphine administration or after successful training of conditioned place preference. Acute administration of morphine (0.1, 0.5, 1, 5, 10,20 mg/kg, i. p.) produced an increase in absolute EEG power in the delta, theta, alphal, alpha2, betal, and beta2 bands, as well as a decrease in the gamma band. Topographic mapping revealed a maximal increase in the lateral leads in the theta band and a maximal change in the centrofrontal region in the remaining bands. After place conditioning training, the morphine-related environment induced a diffuse decrease in absolute power in the delta, theta, alphal, alpha2, betal, and beta2 bands, which was opposite to the changes induced by acute morphine administration. In addition, the changes in relative power induced by the two situations also diverged. These results indicate that the central mechanisms underlying the motivation of morphine-induced place preference may be somehow different from those underlying the reward effects produced by acute morphine administration.; Previous studies demonstrated that drug cues could elicit drug-like or withdrawal-like effect, both subjectively and physiologically. However, few studies have compared the central activities induced by a drug-related environment and the drug itself. The aim of this study was to observe and compare electroencephalographic (EEG) changes induced by acute morphine administration and by the morphine-related environment. EEG activities were recorded via twelve skull electrodes scattered on the left and right cortex in conscious, freely moving rats, either after acute morphine administration or after successful training of conditioned place preference. Acute administration of morphine (0.1, 0.5, 1, 5, 10,20 mg/kg, i. p.) produced an increase in absolute EEG power in the delta, theta, alphal, alpha2, betal, and beta2 bands, as well as a decrease in the gamma band. Topographic mapping revealed a maximal increase in the lateral leads in the theta band and a maximal change in the centrofrontal region in the remaining bands. After place conditioning training, the morphine-related environment induced a diffuse decrease in absolute power in the delta, theta, alphal, alpha2, betal, and beta2 bands, which was opposite to the changes induced by acute morphine administration. In addition, the changes in relative power induced by the two situations also diverged. These results indicate that the central mechanisms underlying the motivation of morphine-induced place preference may be somehow different from those underlying the reward effects produced by acute morphine administration. (c) 2006 Elsevier B.V. All rights reserved.
关键词morphine opioid addiction conditioned place preference drug-seeking electroencephalogram
学科领域生理心理学/生物心理学
收录类别SCI ; SSCI
语种英语
WOS记录号WOS:000244882500009
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/5117
专题中国科学院心理研究所回溯数据库(1956-2010)
通讯作者C. L. Cui; F. Luo
作者单位1.Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing 100101, Peoples R China
2.Peking Univ, Hlth Sci Ctr, Neurosci Res Inst, Beijing 10083, Peoples R China
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Zuo, Yan-Fang,Wang, Jin-Yan,Chen, Ji-Huan,et al. A comparison between spontaneous electroencephalographic activities induced by morphine and morphine-related environment in rats[J]. BRAIN RESEARCH,2007,1136(1):88-101.
APA Zuo, Yan-Fang.,Wang, Jin-Yan.,Chen, Ji-Huan.,Qiao, Zhi-Mei.,Han, Ji-Sheng.,...&F. Luo.(2007).A comparison between spontaneous electroencephalographic activities induced by morphine and morphine-related environment in rats.BRAIN RESEARCH,1136(1),88-101.
MLA Zuo, Yan-Fang,et al."A comparison between spontaneous electroencephalographic activities induced by morphine and morphine-related environment in rats".BRAIN RESEARCH 1136.1(2007):88-101.
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