Psychol Med:体素meta分析成人成瘾在反应抑制过程中神经活动的改变

2021-03-09 MedSci原创 MedSci原创

成瘾患者在非成瘾相关刺激的反应抑制任务中,FPN、VAN和小脑的激活发生了改变。虽然FPN和VAN的活性较低,但小脑的活性较强。这些结果可能有助于理解成瘾反应抑制的神经病理学。

以前的文献广泛研究了成瘾者在反应抑制过程中的大脑活动。但结果并不一致,如:与健康对照组(HCS)相比,吸毒者的额顶网络(FPN)和腹侧注意网络(VAN)的活动有增强有减弱。考虑到成瘾反应抑制过程中神经活动变化的不一致性,需要定量的荟萃分析来解开相互矛盾的结果。广东外语外贸大学应用心理学系Zeguo Qiu利用meta分析揭示成瘾者在反应抑制方面的一致神经改变,该研究发表在Psychological Medicine杂志。

由于上瘾个体的特点是过度使用成瘾物质或参与行为成瘾,这是反应抑制受损的行为表现;Zeguo Qiu假设,所有上瘾的个体都会在FPN和VAN这两个成功反应抑制的核心神经系统中显示出活动减少。此外,由于物质依赖(SD)和行为成瘾在本质上可能是截然不同的,因此有理由预计这两种成瘾亚型之间会出现不同的神经异常模式。

Zeguo Qiu等对SD和行为成瘾的成人在反应抑制任务中异常的任务诱发区域活动进行体素Meta分析,以解决以往不一致的问题。共分析了23项功能磁共振成像研究,其中包括479名药物使用者、38名行为成瘾者和494名HCS。

Meta分析结果表明:(a)所有成瘾者与反应抑制时的HCS;(b)SD亚组与反应抑制时的HCS之间的任务诱发激活的区域性差异的Meta分析结果。低激活区域显示为蓝色,高激活区域显示为红色。颜色栏代表最大和最小显著差异区域(SDM)-Z值。

HCS相比,所有成瘾者在反应抑制时,FPN(额下回和缘上回)VAN(额下回、颞中回、颞极和岛叶)活动减弱,小脑活动增强。与HCS相比,SD亚组表现出与HCS几乎相同的活动模式,只是中央前回活动更少。在患有SD的成年人中,小脑的较强激活与较长的成瘾持续时间有关。但由于数据集数量较少,无法对行为成瘾亚组进行Meta分析研究。

这一Meta分析显示成瘾患者在非成瘾相关刺激的反应抑制任务中,FPNVAN和小脑的激活发生了改变。虽然FPNVAN的活性较低,但小脑的活性较强。这些结果可能有助于理解成瘾反应抑制的神经病理学。

原文出处:Qiu Zeguo,Wang Junjing,Altered neural activities during response inhibition in adults with addiction: a voxel-wise meta-analysis.[J] .Psychol Med, 2021, undefined: 1-13.

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    2021-10-17 一闲
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    2021-08-14 guojianrong
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    2021-03-10 科研科研科研

    meta分析成人成瘾研究

    0

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    2021-03-09 科研科研科研

    MET分析承认成瘾

    0

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