Kang Min-Suk, Blake Randolph
Department of Psychology, Vanderbilt University, Nashville, Tennessee 37203, USA.
Psychon Bull Rev. 2008 Jun;15(3):586-91. doi: 10.3758/pbr.15.3.586.
Rapid, repetitive exchange of dissimilar, rival stimuli between the two eyes can produce slow alternations in perceptual dominance. This phenomenon, called stimulus rivalry, is potentially important for studying resolution of visual conflict associated with neural processing beyond the level of interocular competition. As previously implemented, however, stimulus rivalry can be difficult for some observers to experience, and it tends to occur within a relatively narrow range of contrasts and spatial frequencies. Here we show that it is possible to increase the incidence of stimulus rivalry by brief, periodic presentation of a composite configuration created by superimposition of the two rival stimuli. Possible reasons for the effectiveness of the composite in promotion of stimulus rivalry are discussed.
两眼之间快速、重复地交换不同的、相互竞争的刺激，可以在知觉优势上产生缓慢的交替。这种现象称为刺激竞争，对于研究与眼间竞争水平之上的神经处理相关的视觉冲突的解决可能具有重要意义。然而，如先前实施的那样，刺激竞争对一些观察者来说可能难以体验，并且它往往发生在相对较窄的对比度和空间频率范围内。在这里，我们表明，通过短暂、周期性地呈现由两个竞争刺激叠加而创建的复合配置，可以提高刺激竞争的发生率。讨论了该复合体促进刺激竞争有效性的可能原因。
