视觉空间工作记忆受损,但在双相情感障碍中保留了注意力控制
Catherine V Barnes-Scheufler1, Lara Rösler1,2, Carmen Schiweck1
1Department of Psychiatry, Psychosomatic Medicine and Psychotherapy, Goethe University Frankfurt, University Hospital, Frankfurt, Germany.
Psychological medicine
|December 9, 2025
概括
双相情感障碍 (PBD) 患者表现出工作记忆 (WM) 缺陷,但他们的注意力控制能力完好无损. 这表明WM整合,而不是选择性关注,是PBD的主要问题.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 精神病学是一个精神病学.
背景情况:
- 工作记忆 (WM) 和注意力缺陷显著影响双相情感障碍 (PBD) 患者的日常功能.
- 了解这些缺陷的神经认知基础对于开发有效的亲认知干预措施至关重要.
- 这项研究研究了注意力控制和PBD中的WM编码之间的相互作用.
研究的目的:
- 共同检查双相情感障碍患者的注意力控制和工作记忆编码.
- 确定注意力缺陷是否有助于PBD中的工作记忆障碍.
- 阐明PBD中WM功能障碍背后的特定认知机制.
主要方法:
- 一个视觉空间变化检测任务被用在了63名euthymic PBD患者和76名健康对照 (HCS) 上.
- 在WM编码过程中,通过操纵自下而上的注意力 (通过闪的Gabor补丁突出刺激) 和自上而下的注意力 (对目标位置的预测线索) 来研究注意力竞争.
主要成果:
- 与健康对照人群相比,双相情感障碍患者在所有疾病中显著减少了视觉WM能力.
- 没有发现组与突出或组与暗示之间的显著相互作用.
- 这些结果表明,PBD中WM受损不归因于注意力控制的缺陷.
结论:
- 双相情感障碍患者的工作记忆受损.
- 在PBD中,注意力优先考虑突出的刺激和利用自上而下的线索仍然完好无损.
- 研究结果表明,WM编码的后期阶段,如整合,主要受到影响,而不是选择性关注.
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