肖像和记忆:通过虚假控制的fMRI研究调查HF-rTMS对情节性回忆的影响
Raquel Guiomar1, Beatriz Catoira2, Peter Van Schuerbeek3
1University of Coimbra (Portugal), Center for Research in Neuropsychology and Cognitive and Behavioral Intervention (CINEICC), Faculty of Psychology and Educational Sciences, Coimbra, Portugal..
NeuroImage
|March 16, 2026
概括
在左脊侧前额叶皮层 (DLPFC) 上进行高频重复性横磁刺激 (HF-rTMS) 在抽象图像的记忆回忆过程中改变了大脑活动. 这种神经调节影响了海马和视觉皮层的参与,但没有改善行为准确性.
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
- 神经成像是一种神经成像.
背景情况:
- 脊侧前额皮层 (DLPFC) 对于认知控制和记忆至关重要.
- 它在情节性检索中的精确作用,特别是对于抽象刺激,需要进一步研究.
- 了解DLPFC对记忆的因果影响是推动认知神经科学的关键.
研究的目的:
- 研究左DLPFC在复杂的抽象刺激的插曲性检索中的因果作用.
- 为了检查左侧DLPFC的高频重复性横磁刺激 (HF-rTMS) 如何影响记忆性能和大脑活动.
- 探索基础上的神经机制回忆检索抽象的视觉信息.
主要方法:
- 采用了受试者内部,假控制的功能磁共振成像 (fMRI) 设计.
- 20名健康的女性参与者进行了抽象肖像图像的编码.
- 在积极或假的HF-rTMS之后,参与者在fMRI扫描期间执行了识别记忆任务,记录了行为数据和大脑激活.
主要成果:
- 在左侧的DLPFC上,主动的HF-rTMS导致了速度精度的权衡,降低了识别刺激的精度.
- fMRI显示,在识别之前看到的刺激时,左海马体和右皮质的血液氧气水平依赖 (BOLD) 活动增加.
- 对于看不见的刺激,没有观察到任何显著的影响,这表明通过刺激选择性调节.
结论:
- 左侧DLPFC HF-rTMS的一个单一会话选择性调节了抽象刺激的情节性记忆检索的神经动态.
- 尽管没有行为改善,对识别物品的准确性降低,但在回忆过程中,刺激增加了海马和视觉皮层的激活.
- 这些发现突显了神经招募和记忆准确性之间的分离,强调了DLPFC在调节海马视觉网络参与中的作用.
相关概念视频
Brain Imaging
Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).
False Memories
False memories represent a cognitive distortion in which individuals recall events that did not happen, or remember them in an altered form. This phenomenon highlights the brain's constructive nature in processing and recalling memories, emphasizing that memory is not a perfect representation of past events but rather a dynamic reconstruction influenced by various factors.
One primary source of false memories is misattribution, where individuals incorrectly associate external information with...
One primary source of false memories is misattribution, where individuals incorrectly associate external information with...


