Arjona Antonio, Escudero Miguel, Gómez Carlos M
Human Psychobiology Lab, Experimental Psychology Department, University of Seville, C/Camilo José Cela s/n, 41018, Sevilla, Spain.
Neuroscience and Behaviour Group, Department of Physiology, University of Seville, Avda. Reina Mercedes 6, 41012, Sevilla, Spain.
Biol Psychol. 2016 Sep;119:171-83. doi: 10.1016/j.biopsycho.2016.07.001. Epub 2016 Jul 16.
The neural bases of the so-called Spatial Cueing Effect in a visuo-auditory version of the Central Cue Posneŕs Paradigm (CCPP) are analyzed by means of behavioral patterns (Reaction Times and Errors) and Event-Related Potentials (ERPs), namely the Contingent Negative Variation (CNV), N1, P2a, P2p, P3a, P3b and Negative Slow Wave (NSW). The present version consisted of three types of trial blocks with different validity/invalidity proportions: 50% valid - 50% invalid trials, 68% valid - 32% invalid trials and 86% valid - 14% invalid trials. Thus, ERPs can be analyzed as the proportion of valid trials per block increases. Behavioral (Reaction Times and Incorrect responses) and ERP (lateralized component of CNV, P2a, P3b and NSW) results showed a spatial cueing effect as the proportion of valid trials per block increased. Results suggest a brain activity modulation related to sensory-motor attention and working memory updating, in order to adapt to external unpredictable contingencies.
通过行为模式（反应时间和错误率）以及事件相关电位（ERP），即伴随负变化（CNV）、N1、P2a、P2p、P3a、P3b和负慢波（NSW），分析了视觉听觉版中央线索波斯纳范式（CCPP）中所谓空间线索效应的神经基础。当前版本由三种具有不同有效/无效比例的试验块组成：50%有效 - 50%无效试验、68%有效 - 32%无效试验和86%有效 - 14%无效试验。因此，随着每个块中有效试验比例的增加，可以对ERP进行分析。行为（反应时间和错误反应）和ERP（CNV、P2a、P3b和NSW的侧化成分）结果表明，随着每个块中有效试验比例的增加，存在空间线索效应。结果表明，大脑活动受到调节，与感觉运动注意力和工作记忆更新有关，以便适应外部不可预测的意外情况。
