预测性分心处理依赖于集成的积极主动和反应性注意力机制.
Oscar Ferrante1,2, Ole Jensen3,4, Clayton Hickey1
1Centre for Human Brain Health, School of Psychology, University of Birmingham, Birmingham B15 2TT, United Kingdom.
概括
大脑主动地通过在搜索开始之前编码它们的位置来抑制可预测的视觉干扰因素. 这种早期的抑制与后来的反应相连,揭示了注意力选择中的共同机制.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 心理学 心理学 心理学
背景情况:
- 视觉注意力受到环境规律的影响,导致主动抑制可预测的分心因素.
- 这种主动干扰抑制的神经基础尚未得到充分理解.
研究的目的:
- 通过磁脑摄影 (MEG) 来研究主动干扰抑制神经机制.
- 为了检查预测分心器位置在视觉搜索之前和之后在大脑中如何处理.
主要方法:
- 使用磁脑电图 (MEG) 和多变量分类分析.
- 参与者执行了一个统计学学习视觉搜索任务,可预测的分心器位置.
- 干扰因子的隐性空间预测是由不均的分布造成的.
主要成果:
- 在搜索阵列呈现之前,分心器位置被编码在temporo-occipital区域,表明主动处理.
- 神经活动模式用于搜索前的分心处理延伸到搜索后的晚期阶段 (∼200 ms).
- 这种概括在早期感官阶段 (∼100 ms) 缺席,这表明不同的处理阶段.
结论:
- 主动抑制引导视觉注意力远离可预测的分心因素.
- 在注意力选择中,共享的机制将可预测的分心因子的主动和反应性处理联系在一起.
- 搜索后的分心处理涉及在不同阶段重新启动抑制机制.
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