File:Spatially-Pooled-Contrast-Responses-Predict-Neural-and-Perceptual-Similarity-of-Naturalistic-Image-pcbi.1002726.s007.ogv
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Spatially-Pooled-Contrast-Responses-Predict-Neural-and-Perceptual-Similarity-of-Naturalistic-Image-pcbi.1002726.s007.ogv (Ogg Theora video file, length 16 s, 352 × 288 pixels, 326 kbps, file size: 635 KB)
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[edit]DescriptionSpatially-Pooled-Contrast-Responses-Predict-Neural-and-Perceptual-Similarity-of-Naturalistic-Image-pcbi.1002726.s007.ogv |
English: Representational dissimilarity matrices at each sample in time of the ERP, starting 50 ms before until 350 ms after stimulus-onset. Dissimilarity between stimuli is measured as Euclidean distance (red = maximal, blue = minimal values in entire data set) between ERP patterns across occipital electrodes (see Materials and Methods). Categories are labeled on the x- and y-axis; each cell of the matrix indexes the dissimilarity between two individual stimuli. Differences between images suddenly emerge around 90 ms after stimulus-onset and disappear again about 60 ms later. These differences cluster in 16×16 blocks, suggesting that categorical information is present in this time period. Later in time, weaker differences arise, but not as large as before, suggesting that category-specific dissimilarities between stimuli are evoked early in time. |
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Source | Video S1 from Groen I, Ghebreab S, Lamme V, Scholte H (2012). "Spatially Pooled Contrast Responses Predict Neural and Perceptual Similarity of Naturalistic Image Categories". PLOS Computational Biology. DOI:10.1371/journal.pcbi.1002726. PMID 23093921. PMC: 3475684. | ||
Author | Groen I, Ghebreab S, Lamme V, Scholte H | ||
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:14, 9 November 2012 | 16 s, 352 × 288 (635 KB) | Open Access Media Importer Bot (talk | contribs) | Automatically uploaded media file from Open Access source. Please report problems or suggestions here. |
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Author | Groen I, Ghebreab S, Lamme V, Scholte H |
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Usage terms | http://creativecommons.org/licenses/by/3.0/ |
Image title | Representational dissimilarity matrices at each sample in time of the ERP, starting 50 ms before until 350 ms after stimulus-onset. Dissimilarity between stimuli is measured as Euclidean distance (red? |
Software used | Xiph.Org libtheora 1.1 20090822 (Thusnelda) |
Date and time of digitizing | 2012-10 |