Semantic fluency deficits and associated brain activity in Parkinson's disease with mild cognitive impairment.
People living with Parkinson's disease (PD) with poor verbal fluency have an increased risk of developing dementia. This study examines the neural mechanisms underpinning semantic fluency deficits in patients with PD with mild cognitive impairment (PD-MCI) compared to those without MCI (PD-NC) and c...
| Publicado en: | Brain Imaging & Behavior Vol. 16; no. 6; pp. 2445 - 2457 |
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| Autores principales: | , , , , , , , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Dec2022
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=160502980&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 160502980 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 19317557 3GSC jtl: Brain Imaging & Behavior issn: 19317557 maglogo: N pubinfo: dt: Dec2022 vid: 16 iid: 6 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 160502980 157985347 160502980 NLM35841523 10.1007/s11682-022-00698-7 NLM35841523 160502980 ppf: 2445 ppct: 12 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Semantic fluency deficits and associated brain activity in Parkinson's disease with mild cognitive impairment. aug: au: Yang, Jihyun McMahon, Katie L Copland, David A Pourzinal, Dana Byrne, Gerard J Angwin, Anthony J O'Sullivan, John D Dissanayaka, Nadeeka N affil: UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Herston, Queensland, Australia sug: subj: Dementia Parkinson Disease Complications Parkinson Disease Semantics Magnetic Resonance Imaging Brain Neuropsychological Tests ab: People living with Parkinson's disease (PD) with poor verbal fluency have an increased risk of developing dementia. This study examines the neural mechanisms underpinning semantic fluency deficits in patients with PD with mild cognitive impairment (PD-MCI) compared to those without MCI (PD-NC) and control participants without PD (non-PD). Thirty-seven (37) participants with PD completed a cognitive assessment battery to identify MCI (13 PD-MCI). Twenty sex- and age-matched non-PD patients also participated. Participants were scanned (3T Siemens PRISMA) while performing semantic fluency, semantic switching, and automatic speech tasks. The number of responses and fMRI data for semantic generation and semantic switching were analyzed. Participants also completed a series of verbal fluency tests outside the scanner, including letter fluency. Participants with PD-MCI performed significantly worse than PD-NC and non-PD participants during semantic fluency and semantic switching tasks. PD-MCI patients showed greater activity in the right angular gyrus than PD-NC and non-PD patients during semantic switching. Increased right angular activity correlated with worse verbal fluency performance outside the scanner. Our study showed that the PD-MCI group performed worse on semantic fluency than either the PD-NC or non-PD groups. Increased right angular gyrus activity in participants with PD-MCI during semantic switching suggests early compensatory mechanisms, predicting the risk of future dementia in PD. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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