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An ERP study of visual change detection : Effects of magnitude of spatial frequency changes on the change-related posterior positivity
| Title: | An ERP study of visual change detection : Effects of magnitude of spatial frequency changes on the change-related posterior positivity |
| Authors: | Kimura, Motohiro Browse this author | | Katayama, Jun'ichi Browse this author | | Murohashi, Harumitsu Browse this author →KAKEN DB |
| Keywords: | Event-related brain potential (ERP) | | Visual change detection | | Magnitude of stimulus changes |
| Issue Date: | Oct-2006 |
| Publisher: | Elsevier B.V. |
| Journal Title: | International Journal of Psychophysiology |
| Volume: | 62 |
| Issue: | 1 |
| Start Page: | 14 |
| End Page: | 23 |
| Publisher DOI: | 10.1016/j.ijpsycho.2005.11.005 |
| PMID: | 16439032 |
| Abstract: | In event-related brain potential (ERP) studies using a visual S1–S2 matching task, change stimuli elicit a posterior positivity at around 100–200 ms. In the present study, we investigated the effects of magnitude of spatial frequency changes on change-related positivity. Each trial consisted of two sequentially presented stimuli (S1–S2), where S2 was either (1) the same as S1 (i.e., NO-change, p = .40), (2) different from S1 in spatial frequency only (SF-change, .40), (3) different in orientation only (OR-change, .10), or (4) different in both spatial frequency and orientation (BOTH-change, .10). Further, three magnitude conditions (Large, Medium, and Small) were used to examine the effect of the magnitude of the spatial frequency change. Participant's (N = 12) task was to respond to S2 with a change in orientation (from vertical to horizontal, or from horizontal to vertical) regardless of the spatial frequency of the stimulus. Changes in the spatial frequency elicited change-related positivity at a latency range of about 120–180 ms, which was followed by a central negativity (N270) and a late positive component (LPC). The amplitude of the change-related positivity tends to be enhanced as the magnitude of the change is increased. These results support the notion that the change-related positivity reflects memory-based change detection in the human visual system. |
| Relation: | http://www.sciencedirect.com/science/journal/01678760 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/14701 |
| Appears in Collections: | 教育学院・教育学研究院 (Graduate School of Education / Faculty of Education) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 片山 順一
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