Evaluating integration of letter fragments through contrast and spatially targeted masking

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dc.citation.articleNumber9en_US
dc.citation.issueNumber6en_US
dc.citation.journalTitleJournal of Visionen_US
dc.citation.volumeNumber24en_US
dc.contributor.authorZhang, Sherryen_US
dc.contributor.authorMorrison, Jacken_US
dc.contributor.authorSun, Thomasen_US
dc.contributor.authorKowal, Daniel R.en_US
dc.contributor.authorGreene, Ernesten_US
dc.date.accessioned2024-08-07T19:15:01Zen_US
dc.date.available2024-08-07T19:15:01Zen_US
dc.date.issued2024en_US
dc.description.abstractFour experiments were conducted to gain a better understanding of the visual mechanisms related to how integration of partial shape cues provides for recognition of the full shape. In each experiment, letters formed as outline contours were displayed as a sequence of adjacent segments (fragments), each visible during a 17-ms time frame. The first experiment varied the contrast of the fragments. There were substantial individual differences in contrast sensitivity, so stimulus displays in the masking experiments that followed were calibrated to the sensitivity of each participant. Masks were displayed either as patterns that filled the entire screen (full field) or as successive strips that were sliced from the pattern, each strip lying across the location of the letter fragment that had been shown a moment before. Contrast of masks were varied to be lighter or darker than the letter fragments. Full-field masks, whether light or dark, provided relatively little impairment of recognition, as was the case for mask strips that were lighter than the letter fragments. However, dark strip masks proved to be very effective, with the degree of recognition impairment becoming larger as mask contrast was increased. A final experiment found the strip masks to be most effective when they overlapped the location where the letter fragments had been shown a moment before. They became progressively less effective with increased spatial separation from that location. Results are discussed with extensive reference to potential brain mechanisms for integrating shape cues.en_US
dc.identifier.citationZhang, S., Morrison, J., Sun, T., Kowal, D. R., & Greene, E. (2024). Evaluating integration of letter fragments through contrast and spatially targeted masking. Journal of Vision, 24(6), 9. https://doi.org/10.1167/jov.24.6.9en_US
dc.identifier.digitali1534-7362-24-6-9_1718011794-85116en_US
dc.identifier.doihttps://doi.org/10.1167/jov.24.6.9en_US
dc.identifier.urihttps://hdl.handle.net/1911/117608en_US
dc.language.isoengen_US
dc.publisherARVOen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives (CC BY-NC-ND) license.  Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.titleEvaluating integration of letter fragments through contrast and spatially targeted maskingen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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