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

偏见竞争的概念在注意力的认知神经科学中很有影响力。有偏见的竞争过程很可能反映在“注意眨眼”现象中。然而，AB图是不一致的，特别是在跨模态的情况下。有人认为，AB在很大程度上取决于注意能力的激活程度，较小的激活程度会导致AB的减少。然而，这个因素在AB实验中是不受控制的，这可能是结果不同的原因。在当前的项目中，我们通过实验通过奖励操纵操纵注意力努力来检验AB激活程度的相关性。这将在感觉模式内部和之间完成。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。

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).