Changes in dynamic functional connectivity in prodromal dementia with Lewy body
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F23%3A00134725" target="_blank" >RIV/00216224:14740/23:00134725 - isvavai.cz</a>
Result on the web
<a href="https://www.eccn2023-marseille.com/" target="_blank" >https://www.eccn2023-marseille.com/</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Changes in dynamic functional connectivity in prodromal dementia with Lewy body
Original language description
Dementia with Lewy body builds significant part of synucleinopathies. Our aim is to study changes in fMRI dynamic functional connectivity characterising the prodromal stage of mild cognitive impairment with Lewy body MCI LB. Sliding window analysis (rectangle windows with length of 61 scans and overlap 90). We computed Pearson correlation coefficients between signals in each window and clustered the correlation matrices with k-means clustering algorithm. 4 states were recommended. We identified the brain state of each time window and evaluated their coverage number of windows spent in the state relative to all windows and density (normalized number of occurrences). Strong feature of state 4 is commonly observed anticorrelation of DMN with most of other resting state networks. Lower normalized number of time spent in state 4 in MCI LB might reflect impairment of prodromal state with respect to healthy controls. Directly proportional relation of state 4 coverage with memory z score in MCI LB group suggests higher damage of memory function in MCI LB participants who spent less time in this state dFC can play role as reasonable parameter for classification of MCI LB patients. Observed results are in concordance with our observations on pilot data.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
30103 - Neurosciences (including psychophysiology)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů