2014
Default Mode Network Connectivity Patterns associated with Visual Processing at Different Stages of Parkinson's Disease
REKTOROVÁ, Irena, Lenka KRAJČOVIČOVÁ, Radek MAREČEK, Marie NOVÁKOVÁ, Michal MIKL et. al.Základní údaje
Originální název
Default Mode Network Connectivity Patterns associated with Visual Processing at Different Stages of Parkinson's Disease
Autoři
REKTOROVÁ, Irena (203 Česká republika, garant, domácí), Lenka KRAJČOVIČOVÁ (703 Slovensko, domácí), Radek MAREČEK (203 Česká republika, domácí), Marie NOVÁKOVÁ (203 Česká republika, domácí) a Michal MIKL (203 Česká republika, domácí)
Vydání
JOURNAL OF ALZHEIMERS DISEASE, AMSTERDAM, IOS PRESS, 2014, 1387-2877
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30000 3. Medical and Health Sciences
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.151
Kód RIV
RIV/00216224:14740/14:00074324
Organizační jednotka
Středoevropský technologický institut
UT WoS
000341595800023
Klíčová slova anglicky
Default mode network; dementia; functional MRI; Parkinson's disease; precuneus; visual processing
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 12. 3. 2015 07:01, Martina Prášilová
Anotace
V originále
Background: The default mode network (DMN) decreases its activity when switching from a resting state to a cognitive task condition, while activity of the network engaged in the given task increases. Visual processing is typically disturbed in Parkinson's disease dementia (PDD). Objective: Using functional MRI, we studied the DMN effective connectivity patterns in PDD as compared with cognitively normal patients with Parkinson's disease (PD) and healthy controls (HC) when switching from baseline to a visual cognitive task condition. Methods: In all, 14 PDD, 18 PD, and 18 age-matched healthy controls participated in this functional MRI study. We used a psychophysiological interaction analysis with the precuneus (PCu) as a seed. The threshold was set at p(FWE) <0.05. Results: The healthy controls showed greater PCu connectivity with the bilateral middle temporal/middle occipital gyri at baseline than during the task condition. The correlation direction changed from positive to negative. Both PD and PDD showed disturbed DMN connectivity with the brain regions that are involved in bottom-up visual processing. In PD, we also found impaired integration of the areas engaged in the ventral attentional network, which might reflect specific attentional deficits observed during the early course of PD. In mild PDD, we detected increased engagement of areas involved in the dorsal attentional network, which corresponds to increased top-down control in this patient group as compared to the healthy controls. Conclusion: Our results show impaired dynamic interplay between large scale brain networks in PD that spread far beyond the motor system.
Návaznosti
ED1.1.00/02.0068, projekt VaV |
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GAP103/12/0552, projekt VaV |
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NT13499, projekt VaV |
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