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Only inferences on anatomical organization from resting state data paradigms not requiring coherent binding have been achieved. Here, we used a paradigm that allowed us to study such relation between perceptual interpretation and functional connectivity under bistable interhemispheric binding vs. non-binding of visual surfaces. Binding occurs by long-range perceptual integration of motion into a single object across hemifields and non-binding reflects opponent segregation of distinct moving surfaces into each hemifield. We hypothesized that perceptual integration vs. segregation of surface motion, which is achieved in visual area hMT+, is modulated by changes in interhemispheric connectivity in this region. Using 7T fMRI, we found that perceptual long-range integration of bistable motion can be tracked by changes in interhemispheric functional connectivity between left\/right hMT+. Increased connectivity was tightly related with long-range perceptual integration. Our results indicate that hMT+ interhemispheric functional connectivity reflects perceptual decision, suggesting its pivotal role on long-range disambiguation of bistable physically constant surface motion. We reveal for the first time, at the scale of fMRI, a relation between interhemispheric functional connectivity and decision based perceptual binding.<\/jats:p>","DOI":"10.1038\/s41598-018-37822-x","type":"journal-article","created":{"date-parts":[[2019,2,4]],"date-time":"2019-02-04T11:04:09Z","timestamp":1549278249000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Tracking perceptual decision mechanisms through changes in interhemispheric functional connectivity in human visual cortex"],"prefix":"10.1038","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2652-3152","authenticated-orcid":false,"given":"Teresa","family":"Sousa","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8586-9554","authenticated-orcid":false,"given":"Jo\u00e3o V.","family":"Duarte","sequence":"additional","affiliation":[]},{"given":"Gabriel N.","family":"Costa","sequence":"additional","affiliation":[]},{"given":"Valentin G.","family":"Kemper","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7184-185X","authenticated-orcid":false,"given":"Ricardo","family":"Martins","sequence":"additional","affiliation":[]},{"given":"Rainer","family":"Goebel","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4364-6373","authenticated-orcid":false,"given":"Miguel","family":"Castelo-Branco","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2019,2,4]]},"reference":[{"key":"37822_CR1","doi-asserted-by":"publisher","first-page":"171","DOI":"10.1016\/S0959-4388(96)80070-5","volume":"6","author":"A Treisman","year":"1996","unstructured":"Treisman, A. 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