Presentation | 2003/5/2 Limited capacity in iconic memory for contour curvature Koji SAKAI, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | We measured the difference threshold for contour curvature in iconic memory by using the spatially cued discrimination method. In Experiments, the study stimulus consisting of 2 to 6 curved contours was briefly presented, followed by red and green lines as cues. The cue delays were 0 ms and 300 ms in Experiments 1 and 2 respectively, and 50 ms before the study offset in Experiment 3. Participants judged if the red-line-cued contour had greater curvature than the green-line-cued contour. Clear set-size effects in Experiments 1 and 2 indicate that iconic memory has a limited capacity. Small difference in set-size effects between Experiments 1 and 2 suggest that iconic memory lasts for at least 300 ms. Set-size effect in Experiment 3 indicates that perception itself has a limited capacity, even while the study stimulus is physically present. These properties of iconic memory at threshold level are contradictory to the traditional view that iconic memory has a high capacity, and a rapidly decaying memory both at suprathreshold and categorical levels. A more efficient method of examining iconic memory is to display a single study stimulus with cues. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Iconic memory / limited capacity / difference threshold / contour curvature |
Paper # | HIP2003-5 |
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Committee | HIP |
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Conference Date | 2003/5/2(1days) |
Place (in Japanese) | (See Japanese page) |
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Topics (in Japanese) | (See Japanese page) |
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Paper Information | |
Registration To | Human Information Processing (HIP) |
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Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | Limited capacity in iconic memory for contour curvature |
Sub Title (in English) | |
Keyword(1) | Iconic memory |
Keyword(2) | limited capacity |
Keyword(3) | difference threshold |
Keyword(4) | contour curvature |
1st Author's Name | Koji SAKAI |
1st Author's Affiliation | Department of Human Relations, Faculty of Human Relations, Kyoto Koka Women's University() |
Date | 2003/5/2 |
Paper # | HIP2003-5 |
Volume (vol) | vol.103 |
Number (no) | 39 |
Page | pp.pp.- |
#Pages | 6 |
Date of Issue |