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The VAN is typically found when comparing experimental trials in which a stimulus was perceived with trials in which the same stimulus was not perceived. However, if the VAN represents a reliable NCC, it should also be observed under conditions in which participants report conscious perception despite the absence of a corresponding visual stimulus, i.e., a visual illusion. Our event-related potential (ERP) study (\n                    <jats:italic>N<\/jats:italic>\n                    \u2009=\u200947) aimed to investigate this question by using a suited stimulation design, the sound-induced flash illusion (SIFI), for which a visual stimulus is presented once together with two short beeps, leading - on about half the trials - to the illusory perception of a second flash, with graded levels of reported awareness of these trials. When comparing illusory with non-illusory trials, we found an enhanced negativity over posterior electrodes between 250 and 300 ms. Frequency analyses additionally revealed lower pre-stimulus alpha power in illusion trials, aligning with prior work linking alpha dynamics to perceptual variability. Our findings suggest that even illusory perceptions enhance negative potentials over posterior regions during the VAN interval, supporting the interpretation of the VAN as a NCC.\n                  <\/jats:p>","DOI":"10.1038\/s41598-025-28068-5","type":"journal-article","created":{"date-parts":[[2025,11,28]],"date-time":"2025-11-28T11:29:00Z","timestamp":1764329340000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Neural correlates of consciousness in the sound-induced flash illusion"],"prefix":"10.1038","volume":"15","author":[{"given":"Theresa","family":"Rieger","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Josefine","family":"Feuerstein","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Niko A.","family":"Busch","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas","family":"Straube","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maximilian","family":"Bruchmann","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2025,11,28]]},"reference":[{"key":"28068_CR1","doi-asserted-by":"publisher","first-page":"119","DOI":"10.1038\/nn0203-119","volume":"6","author":"F Crick","year":"2003","unstructured":"Crick, F. & Koch, C. 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