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Despite their high prevalence and poor prognostic implications instigating extensive research, the precise mechanisms underlying VH remain unclear. Cognitive impairment (CI) is a risk factor and a consistent correlate of VH in LBD. To help shed light on their underlying mechanisms, this study investigates the pattern of CI across the spectrum of VH in LBD.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>30 LBD patients with minor VH (MVH), 13 with complex VH (CVH) and 32 without VH were retrospectively compared on the domains of higher\u2010order visual processing, memory, language and executive functioning. The VH groups were further stratified to investigate whether phenomenological subtypes have distinct cognitive correlates.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>LBD patients with CVH were impaired on the visuo\u2010spatial and executive functioning domains relative to controls. LBD patients with MVH were also impaired on the visuo\u2010spatial domain. No differences emerged in cognitive domains affected between patient groups endorsing specific hallucinatory phenomena.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>A pattern of CI indicating fronto\u2010subcortical dysfunction in combination with posterior cortical involvement is implicated in the genesis of CVH. Moreover, this posterior cortical dysfunction may precede the occurrence of CVH as indicated by selective visuo\u2010spatial deficits in LBD patients with MVH.<\/jats:p><\/jats:sec>","DOI":"10.1002\/gps.5950","type":"journal-article","created":{"date-parts":[[2023,6,19]],"date-time":"2023-06-19T07:48:51Z","timestamp":1687160931000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Neuropsychological correlates of visual hallucinatory phenomena in Lewy body disease"],"prefix":"10.1002","volume":"38","author":[{"given":"Isha","family":"Puntambekar","sequence":"first","affiliation":[{"name":"Department of Neuropsychology National Hospital for Neurology and Neurosurgery  London UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5083-2823","authenticated-orcid":false,"given":"Jennifer","family":"A. 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