查詢結果分析
來源資料
相關文獻
- Brightness Induction : A Study of Correlates of Surface Brightness in Early Visual Areas
- Custom-designed On-line Functional MRI Analysis
- 重大災難對創傷後壓力症候群患者腦部網絡的衝擊--以莫拉克風災為例
- 咖啡成癮者的腦部活化特徵分析--功能性磁振造影
- 功能性磁振造影應用於中風個案抓握動作常見之影像分析與腦區關聯性分析方式
- 跨越心與腦的鴻溝--國科會人文處MRI講習課程引介
- Vision-and Manipulation-Based Signs in Taiwan Sign Language
- The Four Immeasurables in the Bodhisattvabhūmi and Mahāyānasūtrālamkāra and Their Implementation in a Measuring Scale for a Study of Brain Imaging
- 幽默的腦神經機制
- 從fMRI評估鼻咽癌病人在放射線治療前後認知功能的變化
頁籤選單縮合
題 名 | Brightness Induction : A Study of Correlates of Surface Brightness in Early Visual Areas=亮度的誘發 : 早期視覺區平面亮度的神經相關性研究 |
---|---|
作 者 | De Weerd, Peter; De Weerd, Peter; | 書刊名 | 中華心理學刊 |
卷 期 | 53:4 2011.12[民100.12] |
頁 次 | 頁429-435 |
專 輯 | 2010亞太視覺會議精選 |
分類號 | 176.12 |
關鍵詞 | 平面亮度; 功能性磁振造影; 早期視覺區; Early visual cortex; Functional Magnetic Resonance Imaging; FMRI; Surface brightness; |
語 文 | 英文(English) |
中文摘要 | 我們對平面知覺的神經機制所知不多,目前相關的動物神經生理學研究及人體的功能性磁振造影(fMRI) 研究出現相互衝突的結果。在平面亮度知覺的研究領域中,目前爭論著:對於物理上不存在的訊息仍有平面亮度的知覺感,此知覺感是否來自早期視覺區的亮度內插?我們使用fMRI 探討人類的早期視覺區在平面亮度知覺所扮演的角色為何。實驗使用亮度誘發的典範:藉由周圍的動態亮度變化誘發灰色表面上的錯覺亮度改變。我們發現相關的視網膜區域的活動,可能由灰色表面的知覺亮度調控所造成。此發現顯示早期視覺區在知覺平面亮度上扮演重要的角色。目前的資料與貓和猴子的神經生理研究、及人體的fMRI 實驗結果一致。後續需要進一步的研究,才能更具體地說明人類平面知覺的內插亮度的相關神經機制。 |
英文摘要 | The neural mechanisms of surface perception are surprisingly poorly understood and ongoing research both in the domain of neurophysiology with animal models and fMRI in humans has led to conflicting results. In the domain of surface brightness perception, it is debated whether surface perception depends on the interpolation of brightness in early visual areas across regions in the visual field, where that information is physically absent. We used functional Magnetic Resonance Imaging (fMRI) in human subjects to test for a possible contribution of early visual areas to the perception of surface brightness. A brightness induction paradigm was employed in which counterphase illusory brightness changes on a grey surface are induced by dynamic luminance changes in the surround. We found fMRI activity in area V2 that may be attributable to the perceived brightness modulation of the constant, grey surface. This finding suggests a role of early visual cortex in the perception of surface brightness. The data are presented within the context of related neurophysiological studies in cat and monkey, as well as other human fMRI studies. Further experiments have to be performed to conclusively demonstrate a correlate of brightness interpolation during surface perception in humans. |
本系統中英文摘要資訊取自各篇刊載內容。