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相关实验视频

Updated: Jan 16, 2026

Automated Segmentation of Cortical Grey Matter from T1-Weighted MRI Images
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描述与加速计测量的久坐行为相关的灰质缩模式:基于人口的研究.

Minle Tian1,2, Xiaolei Han1,2, Ming Mao1

  • 1Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Department of Neurology, Ministry of Education, Shandong Povincial Hospital, Shandong First Medical University, No. 324 Jingwuweiqi Road, Jinan, Shandong, 250021, P.R. China.

Brain imaging and behavior
|September 30, 2025
PubMed
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久坐不动的行为模式,包括总时间和发作持续时间,与老年人大脑灰质缩有关. 减少久坐时间和增加体力活动可能有助于保持大脑结构和认知健康.

科学领域:

  • 神经科学是一个神经科学.
  • 老年学是指老年学的学科.
  • 公共卫生 公共卫生

背景情况:

  • 自我报告的久坐行为与痴呆症和认知障碍有关,但机制尚不清楚.
  • 了解久坐的行为模式对于老年人群的认知健康至关重要.

研究的目的:

  • 为了研究加速仪测量的久坐不动行为模式与老年人灰质缩之间的关联.
  • 探索久坐时间的积累 (短时间和长时间) 如何与大脑结构有关.

主要方法:

  • 从MIND-中国队列中对911名老年人 (≥60岁) 进行了基于社区的研究.
  • 通过加速度计测量静坐行为 (总时间,比赛持续时间,休息).
  • 脑灰质体积 (GMV) 通过MRI扫描的基于voxel的形态测量 (VBM) 来评估.

主要成果:

  • 总静坐时间与皮,带膜皮和中部皮的GMV之间的反转U形关联.
  • 较长的静坐时间平均持续时间在多个大脑区域线性降低了GMV,特别是额头,,胰岛和带膜皮层.
  • 增加轻度和中度至强度的体力活动与较大的insula GMV相关;长时间的久坐时间与insula和thalamus的GMV减少有关.

结论:

关键词:
加速度计的速度计.灰色物质是一种灰色物质.基于人口的研究.久坐不动的行为 久坐不动的行为基于voxel的形态测量方法

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  • 久坐不动的行为,特别是长时间的动,与老年人灰质缩有关.
  • 缩模式包括全球,额头,,中和带膜皮质的GMV减少,对胰岛和脑膜有显著影响.
  • 研究结果强调了久坐不动的行为模式的重要性,而不仅仅是总时间,对于老龄化中的大脑健康.