| dc.contributor | 心理系 | en_US |
| dc.creator (作者) | 郭柏呈 | zh_TW |
| dc.creator (作者) | Kuo, Bo-Cheng | en_US |
| dc.creator (作者) | Rotshtein, Pia | en_US |
| dc.creator (作者) | Yeh, Yei-Yu | en_US |
| dc.date (日期) | 2011.12 | en_US |
| dc.date.accessioned | 21-May-2014 17:31:45 (UTC+8) | - |
| dc.date.available | 21-May-2014 17:31:45 (UTC+8) | - |
| dc.date.issued (上傳時間) | 21-May-2014 17:31:45 (UTC+8) | - |
| dc.identifier.uri (URI) | http://nccur.lib.nccu.edu.tw/handle/140.119/66131 | - |
| dc.description.abstract (摘要) | We investigated the neural correlates of attentional modulation in the perceptual comparison process for detecting feature-binding changes in an event-related functional magnetic resonance imaging (fMRI) experiment. Participants performed a variant of a cued change detection task. They viewed a memory array, a spatial retro-cue, and later a probe array. Their task was to judge whether the cued item had changed between the two arrays. Change type was manipulated to be a color-location binding or a color feature change. The retro-cue onset time in the retention interval was manipulated to be early or late. As a consequence of strong inter-item competition, we found strong prefrontal activation for late cues when contrasting the binding-change with the color-change condition. In contrast, we observed a comparable behavioral and neural effect between the two types of change detection when retro-cue was presented early. More importantly, we demonstrated a significant inter-regional correlation between the prefrontal and parietal regions in both binding- and color-change conditions for late cues. In addition, extensive prefrontal–parietal–visual functional connectivity was showed for detecting binding changes in the late-cueing condition. These results support the critical role in prefrontal–parietal–visual functional coupling for resolving strong inter-item competition during the comparison process in the binding-change condition. We provide direct evidence that attention modulates neural activity associated with perceptual comparison, biasing competition in favour of the task-relevant information in order to detect binding changes. | en_US |
| dc.format.extent | 662520 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.language.iso | en_US | - |
| dc.relation (關聯) | Brain and Cognition, 77(3), 335-344 | en_US |
| dc.subject (關鍵詞) | Attention; Change detection; Feature binding; Functional magnetic resonance imaging; Visual short-term memory | en_US |
| dc.title (題名) | Attentional modulation of perceptual comparison for feature binding | en_US |
| dc.type (資料類型) | article | en |
| dc.identifier.doi (DOI) | 10.1016/j.bandc.2011.10.001 | en_US |
| dc.doi.uri (DOI) | http://dx.doi.org/10.1016/j.bandc.2011.10.001 | en_US |
