Eng Vivian, Lim Alfred, Janssen Steve M J, Satel Jason
School of Psychology, Faculty of Science, University of Nottingham Malaysia Campus, Malaysia.
Division of Psychology, School of Medicine, Faculty of Health, University of Tasmania, Australia.
Acta Psychol (Amst). 2018 Feb;183:51-57. doi: 10.1016/j.actpsy.2017.12.011. Epub 2018 Jan 9.
Studies of endogenous and exogenous attentional orienting in spatial cueing paradigms have been used to investigate inhibition of return, a behavioral phenomenon characterized by delayed reaction time in response to recently attended locations. When eye movements are suppressed, attention is covertly oriented to central or peripheral stimuli. Overt orienting, on the other hand, requires explicit eye movements to the stimuli. The present study examined the time course of slowed reaction times to previously attended locations when distractors are introduced into overt and covert orienting tasks. In a series of experiments, manual responses were required to targets following central and peripheral cues at three different cue-target intervals, with and without activated oculomotor systems. The results demonstrate that, when eye movements are suppressed, behavioral inhibition is reduced or delayed in magnitude by the presence of a distractor relative to conditions without distractors. However, the time course of behavioral inhibition when eye movements are required remains similar with or without distractors.
空间线索范式中内源性和外源性注意定向的研究已被用于探究返回抑制，这是一种行为现象，其特征是对最近关注过的位置做出反应时反应时间延迟。当眼球运动受到抑制时，注意力会隐蔽地定向到中央或外周刺激上。另一方面，外显定向需要眼球明确地向刺激物移动。本研究考察了在将干扰物引入外显和隐蔽定向任务时，对先前关注过的位置反应时间减慢的时间进程。在一系列实验中，在有和没有激活动眼系统的情况下，在三个不同的线索-目标间隔时间，要求对中央和外周线索后的目标进行手动反应。结果表明，当眼球运动受到抑制时，相对于没有干扰物的情况，干扰物的存在会使行为抑制在程度上降低或延迟。然而，在需要眼球运动时，有或没有干扰物时行为抑制的时间进程仍然相似。
