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However, recent advances in structural and functional MRI techniques allow better estimates of structural connections, as well as the direction of connectivity in functional MRI. These provide more sensitive measures of changes in structural connectivity and allow models of the changes in directional functional connectivity to be tested.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Summary<\/jats:title>\n                <jats:p>We identified 27 relevant studies and found that grey matter imaging continues to show heterogeneous findings in Parkinson\u2019s patients with visual hallucinations. Newer approaches in diffusion imaging and functional MRI are consistent with emerging models of Parkinson\u2019s hallucinations, suggesting shifts in attentional networks. In particular, reduced bottom-up, incoming sensory information, and over-weighting of top-down signals appear to be important drivers of visual hallucinations in Parkinson\u2019s disease.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s11910-023-01267-1","type":"journal-article","created":{"date-parts":[[2023,5,1]],"date-time":"2023-05-01T07:01:19Z","timestamp":1682924479000},"page":"287-299","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Structural and Functional Imaging Correlates of Visual Hallucinations in Parkinson\u2019s Disease"],"prefix":"10.1007","volume":"23","author":[{"given":"Rohan","family":"Bhome","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"George Edward Calver","family":"Thomas","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Angeliki","family":"Zarkali","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5092-6325","authenticated-orcid":false,"given":"Rimona Sharon","family":"Weil","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,5,1]]},"reference":[{"key":"1267_CR1","doi-asserted-by":"publisher","first-page":"S233","DOI":"10.1093\/schbul\/sbu036","volume":"40","author":"F Waters","year":"2014","unstructured":"Waters F, Collerton D, Ffytche DH, Jardri R, Pins D, Dudley R, et al. 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