Abstract：
This study investigates bistable perception as a function of the presentation side of the ambiguous figures and of participants\' sex, to evaluate left-right hemispheric (LH-RH) asymmetries related to consciousness. In two experiments using the divided visual field paradigm, two Rubin\'s vase-faces figures were projected simultaneously and continuously 180 s long to the left (LVF) and right (RVF; Experiment 1) or to the upper (UVF) and lower (DVF; Experiment 2) visual hemifields of 48 healthy subjects monitored with eye-tracker. Experiment 1 enables stimulus segregation from the LVF to the RH and from the RVF to the LH, whereas Experiment 2 does not. Results from Experiment 1 show that males perceived the face profiles for more time in the LVF than in the RVF, with an opposite trend for the vase, whereas females show a similar pattern of perception in the two hemifields. A related result confirmed the previously reported possibility to have simultaneously two different percepts (qualia) in the two hemifields elicited by the two identic ambiguous stimuli, which was here observed to occur more frequently in males. Similar effects were not observed in Experiment 2. These findings suggest that the percepts display the processing abilities of the hemisphere currently processing the stimulus eliciting them (e.g., RH-faces), and that females and males reflect in bistable perception, a genuine manifestation of consciousness, the well-known hemispheric asymmetry differences they show in ordinary perception.
摘要：
这项研究调查了双稳态感知作为模棱两可的人物和参与者性别的表现方面的函数，评估与意识相关的左右半球（LH-RH）不对称性。在使用划分视野范式的两个实验中，同时并连续向左（LVF）和右（RVF；实验1）或上（UVF）和下（DVF；实验2）投射两个Rubin花瓶脸人物，并连续向左（LVF）和右（RVF）投射。用眼睛跟踪器监测的48名健康受试者的视觉半球。实验1使刺激分离从LVF到RH，从RVF到LH，而实验2没有。实验1的结果表明，男性在LVF中比在RVF中感知面部轮廓的时间更长，花瓶的趋势相反，而女性在两个半场表现出相似的感知模式。相关结果证实了先前报道的可能性，即在两个相同的模棱两可的刺激引起的两个偏场中同时具有两种不同的感知（量子），据观察，这在男性中更常见。在实验2中未观察到类似的效果。这些发现表明，感知显示当前处理激发它们的刺激的半球的处理能力（例如，RH-faces),女性和男性在双稳态感知中反映出来，意识的真正表现，众所周知的半球不对称性差异，他们表现在普通的感知。
