Effects of attentional effort on cross-modal audio-visual competitive attentional selection - an fMRI-study

注意力努力对跨模式视听竞争性注意力选择的影响——功能磁共振成像研究

• 批准号: 173048301
• 负责人: Professor Dr. Christian Beste
• 金额: --
• 依托单位: MRC Cognition and Brain Sciences Unit
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/173048301?language=en
• 关键词: Effects; attentional; effort; cross; modal

The concept of biased competition is influential within the cognitive neuroscience of attention. Processes of biased competition are very likely reflected in the “attentional blink (AB)” phenomenon. However, the AB picture is inconsistent especially in the cross-modal case. It has been suggested that AB critically depends upon the degree of activation of attentional capacities, with a smaller degree of activation causing reductions in the AB. Yet, this factor is uncontrolled in AB experiments and would constitute the reason why results vary. In the current project we examine the relevance of the degree of activation for AB by experimentally manipulating attentional effort by means of reward manipulation. This will be done within and between sensory modalities. Experimental effects will be analyzed at a behavioural and neuronal level by means of functional magnetic resonance imaging (fMRI).

在注意力的认知神经科学中，有偏见竞争的概念很有影响。偏见竞争的过程很可能反映在“注意眨眼(AB)”现象上。然而，AB的情况是不一致的，特别是在跨模式的情况下。有人认为，注意能力的激活程度严重依赖于注意能力的激活程度，较小的激活程度会导致注意能力的减少。然而，这一因素在AB实验中是不受控制的，并将构成结果不同的原因。在当前的项目中，我们通过实验通过奖赏操纵来操纵注意努力，来检验激活程度与AB的相关性。这将在感觉模式内和感觉模式之间完成。实验效果将通过功能磁共振成像(FMRI)在行为和神经元水平上进行分析。