在整个竞争环境中积极选择性关注.
Blanca Aguado-López1, Ana F Palenciano1, José M G Peñalver1
1Mind, Brain and Behavior Research Center (CIMCYC), University of Granada, Granada 18071, Spain.
概括
预测竞争水平主动塑造了注意力模板,对于高与低竞争环境有着不同的神经模式. 这种主动调制通过改变预备性大脑活动来影响认知表现.
科学领域:
- 认知神经科学 认知神经科学
- 神经科学是一个神经科学.
背景情况:
- 选择性注意力过信息,有偏见的竞争模型解释了刺激竞争下的目标处理.
- 预期竞争对注意力模板的积极影响仍然不清楚.
研究的目的:
- 研究预期的竞争需求如何使用电脑电图 (EEG) 调节预备性大脑活动.
- 检查准备活动,竞争背景和任务执行之间的关系.
主要方法:
- 使用一个提示目标范式,具有高 (同时) 和低 (顺序) 刺激竞争块.
- 应用多变量模式分析 (MVPA) 和时间频率分析对EEG数据.
主要成果:
- 目标类别的预激活在两个竞争环境中都发生了,具有加快的概况.
- 交叉分类显示,在竞争条件中没有普遍性,表明不同的准备格式.
- 在竞争激烈的环境中观察到更高的达频段功率,介导性能.
结论:
- 内部注意力模板是预先激活的,无论预期的竞争,但他们的神经模式不同.
- 不同的准备过程,与theta权力没有直接联系,是不同的竞争背景的基础.
- 这些发现增强了对跨越不同认知需求的上下注意力控制的理解.
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