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首页> 外文期刊>Biological Psychology >A new account of the effect of probability on task switching: ERP evidence following the manipulation of switch probability, cue informativeness and predictability
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A new account of the effect of probability on task switching: ERP evidence following the manipulation of switch probability, cue informativeness and predictability

机译：概率对任务切换的影响的新描述：操作切换概率，提示信息性和可预测性后的ERP证据

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This task-switching ERP study of 16 young participants investigated whether increased RT slowing on stay trials and faster RTs on switch trials for frequent than infrequent switching are explained by an activation or preparation account. The activation account proposes that task sets are maintained at a higher baseline activation level for frequent switching, necessitating increased task-set updating, as reflected by a larger and/or longer lasting early parietal positivity. The preparation account assumes advance (pre-cue) switch preparation (i.e., task-set reconfiguration), preceding stay and switch trials for frequent switching, as reflected by pre-cue and post-cue late parietal positivities. By and large, the data support the activation account. However, we also found increased, pre-cue task-set updating on frequent stay trials and pre-cue, task-set reconfiguration prior to predictable, frequent switches. These results lead us to propose an extended activation account to explain the effects of switch probability on the executive processes underlying task-switching behavior.
机译：这项针对16位年轻参与者的任务转换ERP研究调查了激活或准备帐户是否解释了频繁进行的不频繁转换导致住院试验的放疗速度减慢和转换试验的放疗速度更快。激活帐户建议将任务集维持在较高的基线激活级别以进行频繁切换，这需要增加任务集更新，这体现在更大和/或更持久的早期壁顶阳性中。准备帐户假定提前（提示）切换准备（即任务集重新配置），频繁切换之前的停留和切换试验，这由提示前和提示后顶壁阳性表示。总体而言，数据支持激活帐户。但是，我们还发现，在频繁逗留试验中增加提示前任务集更新，并在可预测的频繁切换之前对提示前任务集进行重新配置。这些结果使我们提出了一个扩展的激活帐户，以说明切换概率对任务切换行为背后的执行流程的影响。

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