观察到的以目标为导向的行动的时间层次
Shahar Aberbach-Goodman1, Roy Mukamel2
1Sagol School of Neuroscience and School of Psychological Sciences, Tel Aviv University, 6997801, Tel-Aviv, Israel.
Scientific reports
|November 11, 2023
概括
这项研究揭示了大脑如何在不同的时间尺度上分层处理观察到的行为. 不同的大脑区域在不同的时间窗口上整合行动信息,支持依赖时间的神经组织.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 发动机控制器的控制器
背景情况:
- 社交互动需要随着时间的推移整合信息来理解意图.
- 运动认知理论提出基于时间尺度的层次化行动组织.
- 之前的研究表明,在视觉和听觉领域,神经层次为时间信息,但不是运动路径.
研究的目的:
- 为了研究处理观察到的目标导向行动的神经架构.
- 为了确定动作观察的运动路径是否存在时间层次.
- 为了检查大脑如何在不同的时间尺度上整合信息在行动感知过程中.
主要方法:
- 使用功能磁共振成像 (fMRI) 来测量24名观察者的大脑活动.
- 分析了主体间相关性 (ISC),以确定处理观察到的行为的大脑区域.
- 呈现了三种时间尺度的连续手动:原始 (±1.5s),子目标 (±4s) 和高目标 (±10s).
主要成果:
- 在参与动作观察的大脑区域之间发现了不同的时间整合能力.
- 与腹部前运动皮层 (±4s) 和腹部前运动皮层 (±1.5s) 相比,在后顶部和背部前运动皮层中确定了更长的时间尺度 (>±10s).
- 观察到一个半球偏差,与左半球相比,右半球区域 (MT +,体感,早期视觉皮层) 的时间尺度较长.
结论:
- 这些发现支持基于时间目标尺度的观测行动的层次神经映射.
- 证实了信息处理在多种感官模式中的无处不在,时间依赖的神经组织.
- 提供了大脑中独特的时间处理窗口的证据,以了解目标导向的行为.
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