EFFECTS OF SPATIAL CUEING ON LUMINANCE DETECTABILITY - PSYCHOPHYSICAL AND ELECTROPHYSIOLOGICAL EVIDENCE FOR EARLY SELECTION
EFFECTS OF SPATIAL CUEING ON LUMINANCE DETECTABILITY - PSYCHOPHYSICAL AND ELECTROPHYSIOLOGICAL EVIDENCE FOR EARLY SELECTION
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DOI：
10.1037/0096-1523.20.4.887
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发表时间：
1994-08-01
影响因子：
2.1
通讯作者：
HAWKINS, HL
中科院分区：
文献类型：
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作者：
LUCK, SJ;HILLYARD, SA;HAWKINS, HL
进行了三个实验，以确定是否注意相关的亮度检测能力的变化反映了调制的早期感觉处理。实验1和2使用周边线索直接注意，并发现大量的线索有效性对目标的可检测性的影响，这些影响是一致的感官水平的轨迹选择，但不与某些记忆或决策水平的机制。在实验3中，事件相关的脑电位记录在一个类似的范例，使用中央线索，并注意被发现产生的变化，感觉诱发的大脑活动开始在第一个100毫秒的刺激处理。这些变化既包括增强的感官反应出席的刺激和抑制的感官反应无人值守的刺激，增强和抑制效果被隔离到不同的神经反应，表明它们可能会出现独立的注意机制。
Three experiments were conducted to determine whether attention-related changes in luminance detectability reflect a modulation of early sensory processing. Experiments 1 and 2 used peripheral cues to direct attention and found substantial effects of cue validity on target detectability; these effects were consistent with a sensory-level locus of selection but not with certain memory- or decision-level mechanisms. In Experiment 3, event-related brain potentials were recorded in a similar paradigm using central cues, and attention was found to produce changes in sensory-evoked brain activity beginning within the 1st 100 ms of stimulus processing. These changes included both an enhancement of sensory responses to attended stimuli and a suppression of sensory responses to unattended stimuli; the enhancement and suppression effects were isolated to different neural responses, indicating that they may arise from independent attentional mechanisms.