Exploring the Processing Unit of Consciousness by Interocular Unconscious Grouping and Object-based Attention
Date Issued
2014
Date
2014
Author(s)
Lin, San-Yuan
Abstract
Consciousness has been a fascinating issue that many theories have been trying to elucidate the function of consciousness and how it emerges. Past studies showed that consciousness and attention share a common mechanism in selecting object—attended objects are consciously perceived as well. In this thesis, we examined whether consciousness is also based on objects just like attention is. Specifically, objects that can affect the distribution of attention are decomposed and presented as visible and invisible parts in two eyes. If complementary parts of the object can integrate, participants’ attention will be affected and reflected on the measurement. In this thesis, three studies using objects defined by stimuli of different levels were carried out to examine whether complementary objects can be integrated between the eyes. Study 1 used objects defined by physical contour, Study 2 used objects defined by amodal completion, and Study 3 used objects defined by semantics in a two-character Chinese word. The results showed that attentional selection and participants’ subjective awareness dissociates on the functional objects (objects integrated between the eyes): while one’s attention can select such objects and affect task performance accordingly, the visible and invisible parts of these objects remained the same. Based on these findings, we conclude that consciousness and attention do not operate on the same basis—the object. This finding provides evidence for dissociation between consciousness and attention in terms of information processing.
Subjects
跨眼整合
雙眼競爭
連續閃現抑制
無意識處理
注意力
物體
Type
thesis
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