{
  "abstract": "The COVIS theory of category learning posits separate roles for two different category learning systems. An explicit system mediated by prefrontal regions is involved in learning rule-described categories and an implicit system mediated by the tail of the caudate nucleus is involved in learning non rule-described categories. We conducted two behavioural experiments to validate a carefully controlled categorization task intended to dissociate these explicit and implicit systems. Then we applied fNIRS neuroimaging within-subjects to localize a neuroanatomical dissociation. We localized two effects to R DLPFC (1) a simple single-dissociation of higher activity in RB categorization, and (2) a negative relationship between overall task performance and the magnitude of neural activation. We conclude that explicit and implicit cortical activity are dissociable by neuroimaging, and that fNIRS is a feasible modality to study human categorization.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "name": "Tianhong (Tim) Qiu"
    },
    {
      "name": "Isaac Withers"
    },
    {
      "name": "John Paul Minda"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bnbjvfmrce579.bib",
  "cited_by": 0,
  "doi": "10.31234/osf.io/4dvn3_v2",
  "fulltext_url": null,
  "id": "bnbjvfmrce579",
  "issns": [],
  "landing_url": "https://osf.io/preprints/psyarxiv/4dvn3_v2/",
  "language": null,
  "licence": "CC0-1.0",
  "licence_label": "CC0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/publicdomain/zero/1.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "bepress",
      "Cognitive Neuroscience"
    ],
    [
      "bepress",
      "Cognitive Psychology"
    ],
    [
      "bepress",
      "Neuroscience"
    ],
    [
      "bepress",
      "Social and Behavioral Sciences"
    ],
    [
      "openalex",
      "2805|Neural and Behavioral Psychology Studies"
    ]
  ],
  "openalex": "W7213523409",
  "pdf_url": "https://osf.io/4dvn3/download",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-17",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bnbjvfmrce579.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:30Z",
      "native_id": "4dvn3",
      "source": "osf",
      "url": "https://osf.io/preprints/psyarxiv/4dvn3_v2/"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "bepress:Cognitive Neuroscience",
      "subfield": "neuroscience"
    }
  ],
  "title": "Shedding Light on COVIS: Evidence from Optical Neuroimaging for Dissociable Category Learning Systems",
  "title_text": "Shedding Light on COVIS: Evidence from Optical Neuroimaging for Dissociable Category Learning Systems",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:30Z",
  "url": "https://research.draconitic.com/paper/bnbjvfmrce579",
  "venue": "PsyArXiv",
  "versions": []
}