Distinguishing blocking from attenuation in visual selective attention.

Distinguishing blocking from attenuation in visual selective attention.
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DOI:
10.1177/0956797611407927
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发表时间:
2011-06
影响因子:
8.2
通讯作者:
Moore CM
Moore CM
中科院分区:
心理学1区
文献类型:
--
作者:
Yigit-Elliott S;Palmer J;Moore CM

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感官信息必须被选择性地处理,以便表现世界和指导行为。这种选择是如何发生的?在这里,我们考虑了两种可供选择的选择机制:在阻断中,无人参与的刺激完全被阻止进入下游过程;在衰减中,无人参与的刺激强度降低,但如果足够强,仍然可以进入下游过程。关于阻断或衰减是否是一种更准确的人类行为模式,现有的证据好坏参半。利用阻塞和衰减之间的一般区别-阻塞不能被强刺激克服,而衰减可以-我们在空间过滤和空间监测两种空间选择范式中测量了注意力如何与刺激强度相互作用。该证据与滤波范式的阻塞和监测范式的衰减一致。这种方法提供了对无人看管的刺激的命运的一般衡量。
Sensory information must be processed selectively in order to represent the world and guide behavior. How does such selection occur? Here we consider two alternative classes of selection mechanisms: In blocking, unattended stimuli are blocked entirely from access to downstream processes, and in attenuation, unattended stimuli are reduced in strength but if strong enough can still access downstream processes. Existing evidence as to whether blocking or attenuation is a more accurate model of human performance is mixed. Capitalizing on a general distinction between blocking and attenuation—blocking cannot be overcome by strong stimuli, whereas attenuation can—we measured how attention interacted with the strength of stimuli in two spatial selection paradigms, spatial filtering and spatial monitoring. The evidence was consistent with blocking for the filtering paradigm and with attenuation for the monitoring paradigm. This approach provides a general measure of the fate of unattended stimuli.
DOI: 10.1016/j.visres.2008.09.018
发表时间: 2009-06
期刊: Vision research
影响因子: 1.8
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