{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,26]],"date-time":"2026-03-26T06:25:22Z","timestamp":1774506322857,"version":"3.50.1"},"update-to":[{"DOI":"10.1371\/journal.pcbi.1010522","type":"new_version","label":"New version","source":"publisher","updated":{"date-parts":[[2022,10,6]],"date-time":"2022-10-06T00:00:00Z","timestamp":1665014400000}}],"reference-count":87,"publisher":"Public Library of Science (PLoS)","issue":"9","license":[{"start":{"date-parts":[[2022,9,26]],"date-time":"2022-09-26T00:00:00Z","timestamp":1664150400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["NSF CAREER BCS-1942438"],"award-info":[{"award-number":["NSF CAREER BCS-1942438"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000005","name":"U.S. Department of Defense","doi-asserted-by":"publisher","award":["NDSEG Fellowship Program"],"award-info":[{"award-number":["NDSEG Fellowship Program"]}],"id":[{"id":"10.13039\/100000005","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.ploscompbiol.org"],"crossmark-restriction":false},"short-container-title":["PLoS Comput Biol"],"abstract":"<jats:p>After years of experience, humans become experts at perceiving letters. Is this visual capacity attained by learning specialized letter features, or by reusing general visual features previously learned in service of object categorization? To explore this question, we first measured the perceptual similarity of letters in two behavioral tasks, visual search and letter categorization. Then, we trained deep convolutional neural networks on either 26-way letter categorization or 1000-way object categorization, as a way to operationalize possible specialized letter features and general object-based features, respectively. We found that the general object-based features more robustly correlated with the perceptual similarity of letters. We then operationalized additional forms of experience-dependent letter specialization by altering object-trained networks with varied forms of letter training; however, none of these forms of letter specialization improved the match to human behavior. Thus, our findings reveal that it is not necessary to appeal to specialized letter representations to account for perceptual similarity of letters. Instead, we argue that it is more likely that the perception of letters depends on domain-general visual features.<\/jats:p>","DOI":"10.1371\/journal.pcbi.1010522","type":"journal-article","created":{"date-parts":[[2022,9,26]],"date-time":"2022-09-26T13:49:11Z","timestamp":1664200151000},"page":"e1010522","update-policy":"https:\/\/doi.org\/10.1371\/journal.pcbi.corrections_policy","source":"Crossref","is-referenced-by-count":12,"title":["General object-based features account for letter perception"],"prefix":"10.1371","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4776-8730","authenticated-orcid":true,"given":"Daniel","family":"Janini","sequence":"first","affiliation":[]},{"given":"Chris","family":"Hamblin","sequence":"additional","affiliation":[]},{"given":"Arturo","family":"Deza","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1738-4744","authenticated-orcid":true,"given":"Talia","family":"Konkle","sequence":"additional","affiliation":[]}],"member":"340","published-online":{"date-parts":[[2022,9,26]]},"reference":[{"key":"pcbi.1010522.ref001","volume-title":"Principles of perceptual learning and development","author":"EJ Gibson","year":"1969"},{"issue":"1273","key":"pcbi.1010522.ref002","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1098\/rstb.1992.0001","article-title":"Representation of visual stimuli in inferior temporal cortex","volume":"335","author":"CG Gross","year":"1992","journal-title":"Philos Trans R Soc Lond B Biol Sci"},{"issue":"2","key":"pcbi.1010522.ref003","doi-asserted-by":"crossref","first-page":"60","DOI":"10.1038\/scientificamerican0860-60","article-title":"Pattern Recognition by Machine","volume":"203","author":"OG Selfridge","year":"1960","journal-title":"Sci Am"},{"issue":"4","key":"pcbi.1010522.ref004","doi-asserted-by":"crossref","first-page":"523","DOI":"10.1016\/S0959-4388(97)80032-3","article-title":"Mechanisms of visual object recognition: monkey and human studies","volume":"7","author":"K. 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