Fuentes-Claramonte Paola, Ávila César, Rodríguez-Pujadas Aina, Ventura-Campos Noelia, Bustamante Juan C, Costumero Víctor, Rosell-Negre Patricia, Barrós-Loscertales Alfonso
Departament de Psicologia Bàsica, Clínica i Psicobiologia, Universitat Jaume I, Castelló de la Plana, Spain.
Departamento de Psicología y Sociología, Facultad de Educación, Universidad de Zaragoza, Zaragoza, Spain.
PLoS One. 2015 Apr 13;10(4):e0123073. doi: 10.1371/journal.pone.0123073. eCollection 2015.
Current perspectives on cognitive control acknowledge that individual differences in motivational dispositions may modulate cognitive processes in the absence of reward contingencies. This work aimed to study the relationship between individual differences in Behavioral Activation System (BAS) sensitivity and the neural underpinnings involved in processing a switching cue in a task-switching paradigm. BAS sensitivity was hypothesized to modulate brain activity in frontal regions, ACC and the striatum. Twenty-eight healthy participants underwent fMRI while performing a switching task, which elicited activity in fronto-striatal regions during the processing of the switch cue. BAS sensitivity was negatively associated with activity in the lateral prefrontal cortex, anterior cingulate cortex and the ventral striatum. Combined with previous results, our data indicate that BAS sensitivity modulates the neurocognitive processes involved in task switching in a complex manner depending on task demands. Therefore, individual differences in motivational dispositions may influence cognitive processing in the absence of reward contingencies.
当前对认知控制的观点认为，在没有奖励条件的情况下，动机倾向的个体差异可能会调节认知过程。这项研究旨在探讨行为激活系统（BAS）敏感性的个体差异与任务转换范式中处理转换线索所涉及的神经基础之间的关系。研究假设BAS敏感性会调节额叶区域、前扣带回和纹状体的大脑活动。28名健康参与者在进行转换任务时接受了功能磁共振成像（fMRI）检查，该任务在处理转换线索期间引发了额纹状体区域的活动。BAS敏感性与外侧前额叶皮质、前扣带回皮质和腹侧纹状体的活动呈负相关。结合先前的研究结果，我们的数据表明，BAS敏感性会根据任务需求以复杂的方式调节任务转换中涉及的神经认知过程。因此，在没有奖励条件的情况下，动机倾向的个体差异可能会影响认知加工。
