Cognitive Neuroscience Research Unit, Department of Communication and Psychology, Aalborg University Aalborg, Denmark ; Cognitive Neuroscience Research Unit, Hammel Neurorehabilitation and Research Center, MindLab, Institute of Clinical Medicine, Aarhus University Aarhus C, Denmark.
Front Psychol. 2013 Mar 18;4:116. doi: 10.3389/fpsyg.2013.00116. eCollection 2013.
This paper reports an experiment intended to test a particular hypothesis derived from blindsight research, which we name the "source misidentification hypothesis." According to this hypothesis, a subject may be correct about a stimulus without being correct about how she had access to this knowledge (whether the stimulus was visual, auditory, or something else). We test this hypothesis in healthy subjects, asking them to report whether a masked stimulus was presented auditorily or visually, what the stimulus was, and how clearly they experienced the stimulus using the Perceptual Awareness Scale (PAS). We suggest that knowledge about perceptual modality may be a necessary precondition in order to issue correct reports of which stimulus was presented. Furthermore, we find that PAS ratings correlate with correctness, and that subjects are at chance level when reporting no conscious experience of the stimulus. To demonstrate that particular levels of reporting accuracy are obtained, we employ a statistical strategy, which operationally tests the hypothesis of non-equality, such that the usual rejection of the null-hypothesis admits the conclusion of equivalence.
本文报告了一项旨在测试源于盲视研究的特定假设的实验，我们将其命名为“来源误认假设”。根据该假设，主体对于刺激的判断可能是正确的，而她获取该知识的方式（刺激是视觉、听觉还是其他方式）可能是错误的。我们在健康受试者中测试了这一假设，要求他们报告掩蔽刺激是听觉呈现还是视觉呈现，刺激是什么，以及他们使用感知意识量表（PAS）对刺激的感知有多清晰。我们认为，关于感知模式的知识可能是正确报告呈现刺激的必要前提。此外，我们发现 PAS 评分与正确性相关，当报告对刺激没有有意识的体验时，受试者处于随机水平。为了证明特定水平的报告准确性，我们采用了一种统计策略，该策略从操作上检验了非等效性的假设，即通常拒绝零假设可以得出等效的结论。
