Perceptual load interacts with involuntary attention at early processing stages: event-related potential studies.
Perceptual load interacts with involuntary attention at early processing stages: event-related potential studies.
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知觉负荷与早期处理阶段的非自愿注意相互作用：事件相关潜力研究
DOI：
10.1016/j.neuroimage.2009.06.028
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发表时间：
2009-10-15
期刊：
影响因子：
5.7
通讯作者：
Parasuraman, Raja
中科院分区：
文献类型：
--
作者：
Fu, Shimin;Huang, Yuxia;Luo, Yuejia;Wang, Yan;Fedota, John;Greenwood, Pamela M.;Parasuraman, Raja
知觉负荷已知会影响大脑中的注意选择位点，但其潜在机制尚不清楚。我们使用事件相关电位（ERPs）来研究知觉负荷如何与线索驱动的非自愿注意相互作用。在目标位置由外周线索非自愿提示的线取向辨析任务中，知觉负荷被操纵。P1m（峰潜伏期在108 ~ 140 ms之间的后中线P1分量）的注意调制被观察到，无效试验比有效试验激发出更大的P1m。这种对P1m的注意效应随着知觉负荷的增加而增加，这表明知觉负荷和非自愿注意的相互作用存在一个早期的时间点。C1分量的注意调制（峰值潜伏期约为80毫秒）也被观察到，但仅适用于混合呈现低负荷刺激的高负荷刺激。结果表明：(a)知觉负荷影响注意选择的早期加工阶段；(b)知觉负荷较早地与非自愿注意相互作用，并与不同的大脑机制相对于自愿注意相互作用；(c)在最佳实验条件下，C1时间范围内的注意调制是可能的。
Perceptual load is known to influence the locus of attentional selection in the brain but through an unknown underlying mechanism. We used event-related potentials (ERPs) to investigate how perceptual load interacts with cue-driven involuntary attention. Perceptual load was manipulated in a line orientation discrimination task in which target location was cued involuntarily by means of peripheral cues. Attentional modulation was observed for P1m (the posterior midline P1 component with peak latency between 108 and 140 ms) with invalid trials eliciting larger P1m than valid trials. This attentional effect on P1m increased as a function of perceptual load, suggesting an early temporal locus for the interaction of perceptual load and involuntary attention. Attentional modulation for the C1 component (peak latency at approximately 80 ms) was also observed, but only for high load stimuli that were presented intermixed with low load stimuli. Results suggest that (a) perceptual load affects attentional selection at early processing stages; (b) perceptual load interacts with involuntary attention earlier and with different brain mechanisms relative to voluntary attention; and (c) attentional modulation in the C1 time range is possible under optimal experimental conditions.
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影响因子：
2.6
作者：
Eimer, M
通讯作者：
Eimer, M
影响因子：
2
作者：
Juan, CH;Walsh, V
通讯作者：
Walsh, V
DOI：
10.3758/bf03212070
发表时间：
2000-01-01
期刊：
PERCEPTION & PSYCHOPHYSICS
影响因子：
--
作者：
Handy, TC;Mangun, GR
通讯作者：
Mangun, GR
DOI：
10.1098/rstb.1998.0281
发表时间：
1998-08-29
期刊：
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
影响因子：
--
作者：
Hillyard, SA;Vogel, EK;Luck, SJ
通讯作者：
Luck, SJ
影响因子：
1.8
作者：
Khoe, W;Mitchell, JF;Hillyard, SA
通讯作者：
Hillyard, SA