时间估计的注意力调制的功能解剖学
Jennifer T Coull1, Franck Vidal, Bruno Nazarian
1Laboratoire de Neurobiologie de la Cognition, Centre National de la Recherche Scientifique (CNRS), 31 Chemin Joseph-Aiguier, 13402 Marseille Cedex 20, France. jcoull@lnf.cnrs-mrs.fr
Science (New York, N.Y.)
|March 6, 2004
概括
我们对时间的感知是主观的,受到注意力的影响. 专注于时间选择性地激活特定的大脑区域,揭示了计时行为的神经基础.
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
背景情况:
- 主观时间感知受到注意力集中的影响.
- 对事件持续时间的注意力减少,导致对事件持续时间较短的感知.
研究的目的:
- 研究注意时间与注意其他感官属性的神经相关性.
- 确定特定参与时间持续时间的主观体验的大脑区域.
主要方法:
- 使用与事件相关的功能磁共振成像 (fMRI).
- 对刺激的时间和颜色属性的注意力进行了参数调制.
- 大脑活动与任务表现相关.
主要成果:
- 随着注意力增加,任务性能线性增加,伴随着大脑活动的增加.
- 观察到皮质干状网络活动的选择性增加 (包括补充前运动区域和右额头部),对时间的注意力增加.
- 观察到V4区域活动的选择性增加,并增加了对颜色的关注.
结论:
- 这项研究确定了特定的神经解剖学基质用于定时行为.
- 对时间属性的关注选择性地参与了皮质前皮质网络.
- 独特的大脑区域参与了时间与颜色等视觉特征的参与.
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