模拟大脑功能连接中的时间依赖,以根据异质rs-fMRI数据识别自闭症谱系障碍
Yaya Liu1, Qiang Zhao2, Lishuang Zhao3
1School of Computer Engineering, Hubei University of Arts and Science, Xiangyang 441053, China.
Experimental neurobiology
|May 2, 2025
概括
研究人员开发了一个深度学习模型来分析自闭症谱系障碍 (ASD) 风险识别的动态大脑连接模式. 这种方法有望通过发现时间大脑活动差异来提供更准确的诊断工具.
科学领域:
- 神经科学是一个神经科学.
- 计算精神病学是一种计算精神病学.
- 生物标志物发现发现
背景情况:
- 自闭症谱系障碍 (ASD) 研究越来越多地关注客观生物标志物.
- 以前的研究主要使用静态的大脑功能连接,忽视时间动态.
- 动态功能连接模式可能为ASD病理生理学提供新的见解.
研究的目的:
- 在患有自闭症的个体中,随着时间的推移,探索大脑功能连接的动态变化.
- 开发一个深度学习框架,使用时间连接模式识别ASD风险.
- 调查动态功能连接作为ASD客观生物标志物的潜力.
主要方法:
- 利用自闭症脑成像数据交换 (ABIDE) 数据库中的静止状态功能磁共振成像 (rs-fMRI) 数据.
- 采用深度学习框架,将注意力机制和长短期记忆 (LSTM) 网络结合起来.
- 将抽象的动态连接模式转化为高级表示,用于分类.
主要成果:
- 通过内部交叉验证,在ASD分类中获得了74.9%的准确性和75.5%的精度.
- 超过了传统的机器学习分类器,如SVM和随机森林.
- 在不同年龄和性别之间展示了模型的稳定性和通用性.
结论:
- 动态的大脑功能连接模式揭示了ASD个体的非典型时间依赖.
- 拟议的深度学习框架显示了开发准确可靠的ASD诊断工具的巨大潜力.
- 强调时间动态在大脑连接中的重要性,以了解ASD.
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