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已发表论文
广泛性焦虑症认知功能障碍患者事件相关电位 N270 的研究
Authors Yang Y, Zhang X, Zhu Y, Dai Y, Liu T, Wang Y
Published Date June 2015 Volume 2015:11 Pages 1405—1411
DOI http://dx.doi.org/10.2147/NDT.S84666
Received 15 March 2015, Accepted 1 April 2015, Published 3 June 2015
Approved for publication by Professor Wai Kwong Tang
Background: Cognitive function in anxiety disorders has been the subject of limited investigation, especially in generalized anxiety disorder (GAD). The purpose of this study was to investigate the cognitive function in subjects with GAD using mismatch-triggered negativity N270.
Methods: Fifteen medication-free patients with a DSM-IV diagnosis of GAD, and 15 well-matched healthy controls performed a dual-feature delayed matching task while event-related potentials were recorded from their scalp.
Results: The GAD group was characterized by the decreased N270 amplitude in the left hemisphere. The smaller N270 amplitude was associated with greater symptoms of anxiety and depression.
Conclusion: Since N270 is thought to index cognitive function in different domains, including attention and memory, our results suggest that individuals with GAD have an impaired cognitive function, particularly in selective attention and working memory. These cognitive deficits may have clinical significance in subjects with GAD and should be considered in treatment planning.
Keywords: generalized anxiety disorder, N270, cognitive function, selective attention, working memory
Methods: Fifteen medication-free patients with a DSM-IV diagnosis of GAD, and 15 well-matched healthy controls performed a dual-feature delayed matching task while event-related potentials were recorded from their scalp.
Results: The GAD group was characterized by the decreased N270 amplitude in the left hemisphere. The smaller N270 amplitude was associated with greater symptoms of anxiety and depression.
Conclusion: Since N270 is thought to index cognitive function in different domains, including attention and memory, our results suggest that individuals with GAD have an impaired cognitive function, particularly in selective attention and working memory. These cognitive deficits may have clinical significance in subjects with GAD and should be considered in treatment planning.
Keywords: generalized anxiety disorder, N270, cognitive function, selective attention, working memory
