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Such large-range visual completion has long been thought to be preattentive, whereas its dependence on top-down influences remains unclear. Here, we report separate modulations by spatial attention and task relevance on the neural activities in response to the ICs. IC-sensitive event-related potentials that were localized to the lateral occipital cortex were modulated by spatial attention at an early processing stage (130\u2013166\u2005ms after stimulus onset) and modulated by task relevance at a later processing stage (234\u2013290\u2005ms). These results not only demonstrate top-down attentional influences on the neural processing of ICs but also elucidate the characteristics of the attentional modulations that occur in different phases of IC processing.<\/jats:p>","DOI":"10.1038\/srep08346","type":"journal-article","created":{"date-parts":[[2015,2,10]],"date-time":"2015-02-10T10:22:27Z","timestamp":1423563747000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Attentional modulations of the early and later stages of the neural processing of visual completion"],"prefix":"10.1038","volume":"5","author":[{"given":"Xiang","family":"Wu","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liang","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cheng","family":"Qian","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lingyu","family":"Gan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daren","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2015,2,10]]},"reference":[{"key":"BFsrep08346_CR1","doi-asserted-by":"publisher","first-page":"48","DOI":"10.1038\/scientificamerican0476-48","volume":"234","author":"G Kanizsa","year":"1976","unstructured":"Kanizsa, G. 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