Cornwell Brian R, Echiverri Aileen M, Grillon Christian
Mood and Anxiety Disorders Program, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland 20892, USA.
Psychophysiology. 2006 Sep;43(5):504-10. doi: 10.1111/j.1469-8986.2006.00421.x.
Although a link between the attentional blink and prepulse startle inhibition has been considered, no evidence of this relationship has been reported. We delivered acoustic startle probes during rapid serial visual presentations in which the relative positions of two targets (targets 1 and 2) was varied within a stream of distractors. Startle probes were presented at 100 ms lead intervals relative to onset of a target or distractor. We found positive correlations between visual prepulse inhibition and attentional blink effects across participants. As the magnitude of prepulse inhibition with target and distractor lead stimuli increased, deficits in identifying target 2 during the attentional blink increased, suggesting similar processes underlying these phenomena. Whereas prepulse inhibition may reveal the strength of inhibition to protect stimulus processing, attentional blink may index the rate of recovery from similar inhibitory processes.
尽管已经有人考虑过注意瞬脱与前脉冲惊吓抑制之间的联系，但尚未有关于这种关系的证据报道。我们在快速序列视觉呈现过程中给予听觉惊吓探测刺激，其中两个目标（目标1和目标2）的相对位置在一串干扰物中变化。惊吓探测刺激在相对于目标或干扰物起始时间提前100毫秒时呈现。我们发现，在参与者中，视觉前脉冲抑制与注意瞬脱效应之间存在正相关。随着目标和干扰物超前刺激的前脉冲抑制幅度增加，注意瞬脱期间识别目标2的缺陷也增加，这表明这些现象背后存在相似的过程。前脉冲抑制可能揭示保护刺激加工的抑制强度，而注意瞬脱可能指示从类似抑制过程中恢复的速率。
