{
  "abstract": "Perceptual decisions have been proposed to involve a common mechanism of evidence accumulation operating across sensory modalities and motor contexts. In human EEG, the centroparietal positivity (CPP) tracks evidence accumulation in such a supramodal motor-independent manner, but its cortical sources are uncertain. Here we combined fMRI and EEG, acquired in separate sessions of the same supramodal change-detection paradigm, with individualized finite element head modeling to identify decision-related networks. A conjunction analysis across visual and auditory modalities and across motor and non-motor required tasks revealed consistent activation of bilateral postcentral, supramarginal, and superior parietal lobules, precentral gyrus, central operculum, middle frontal gyrus, and cerebellum. Forward modeling of fMRI-defined sources indicated that parietal-opercular regions were the dominant contributors to the response-locked and non-motor-required peak-locked CPP signal. These results implicate a network of brain areas in supramodal, motor-independent target-detection decisions, whose specific functional roles can be interrogated in more complex decision tasks in future.",
  "abstract_shown": true,
  "affiliations": [
    "University of Ulster"
  ],
  "article_type": "New results",
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "name": "A. Asadpour"
    },
    {
      "name": "N. A. Steinemann"
    },
    {
      "name": "K. Kalou"
    },
    {
      "name": "S. P. Kelly"
    },
    {
      "name": "R. G. O'Connell"
    },
    {
      "affs": [
        0
      ],
      "name": "K. Wong-Lin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9ef5rv9ap999v.bib",
  "cited_by": 0,
  "doi": "10.64898/2026.10.29.762507",
  "fulltext_url": "https://www.biorxiv.org/content/10.64898/2026.10.29.762507v1.full",
  "id": "9ef5rv9ap999v",
  "issns": [],
  "landing_url": "https://www.biorxiv.org/content/10.64898/2026.10.29.762507v1",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "biorxiv",
      "neuroscience"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://www.biorxiv.org/content/10.64898/2026.10.29.762507v1.full.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9ef5rv9ap999v.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T00:21:38Z",
      "native_id": "10.64898/2026.10.29.762507",
      "source": "biorxiv",
      "url": "https://www.biorxiv.org/content/10.64898/2026.10.29.762507v1"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "biorxiv:neuroscience",
      "subfield": "neuroscience"
    }
  ],
  "title": "Mapping brain networks underlying abstract perceptual decision formation and its EEG signatures",
  "title_text": "Mapping brain networks underlying abstract perceptual decision formation and its EEG signatures",
  "type": "preprint",
  "updated_at": "2026-11-05T00:21:08Z",
  "url": "https://research.draconitic.com/paper/9ef5rv9ap999v",
  "venue": "bioRxiv",
  "versions": []
}