Biol Psychiatry:电刺激大脑可治疗焦虑症及抑郁症

2014-12-19 伊文 生物谷

近日,一篇刊登在国际杂志Biological Psychiatry上的研究论文中,来自西澳大学的研究人员通过研究表示,对大脑进行刺激或可帮助重新训练和焦虑症及抑郁症相关的无益认知习惯。 研究者Patrick Clarke博士表示,大脑额皮质区域进行大约20分钟靶向性电刺激就可以明显改善焦虑症个体完成电脑任务的效率,而这一任务的设计就是为了重新训练焦虑症患者的注

近日,一篇刊登在国际杂志Biological Psychiatry上的研究论文中,来自西澳大学的研究人员通过研究表示,对大脑进行刺激或可帮助重新训练和焦虑症抑郁症相关的无益认知习惯。

研究者Patrick Clarke博士表示,大脑额皮质区域进行大约20分钟靶向性电刺激就可以明显改善焦虑症个体完成电脑任务的效率,而这一任务的设计就是为了重新训练焦虑症患者的注意力无益模式;文章中研究者指出,名为“注意力偏向修正”的认知力再训练步骤可以有效治疗焦虑症障碍、抑郁症、成瘾症,而且也可以帮助治疗进食过多等疾病。

这种注意力偏向修正方法可以通过使得个体不断练习简单的任务来发挥作用,在简单任务的完成过程中个体会忽视掉特定的无益信息,比如愤怒的脸庞或者消极的词汇等,个体进行该任务越多,其注意力从无益信息上转移的就越多,进而其焦虑症的症状表现就越不明显。

此前研究人员鉴别出了特定的大脑额皮质区域,他们认为该区域主要负责个体完成任务时的注意力的关键改变,而本文研究中研究者则发现,对相同的额皮质区域进行电刺激可以有效增强个体的对大脑训练的有效性。这种名为经颅直流电刺激的刺激方法可以通过向头皮输入弱电流来增强大脑特定区域的活性。

最后研究者Clarke表示,目前有很多相关研究来将经颅直流电刺激方法作为一种标准疗法治疗抑郁症,但是本文研究指出,其或许可以同特殊的认知训练疗法相结合来治疗焦虑症及抑郁症患者。

原始出处:

Clarke PJ1, Browning M2, Hammond G3, Notebaert L3, MacLeod C4.The causal role of the dorsolateral prefrontal cortex in the modification of attentional bias: evidence from transcranial direct current stimulation.Biol Psychiatry. 2014 Dec 15;76(12):946-52. doi: 10.1016/j.biopsych.2014.03.003. Epub 2014 Mar 11.


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    2015-08-23 sunylz
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