title: Sleep Disturbance May Alter White Matter and Resting State Functional Connectivities in Parkinson's Disease.
abstract: To clarify whether sleep disturbance would alter the patterns of structural and functional networks underlying cognitive dysfunction in patients with Parkinson's disease (PD).
  
  
  
  Among the 180 patients with nondemented PD in our cohort, 45 patients were classified as the group with sleep disturbance according to the 5-item scales for outcomes in Parkinson's disease nighttime scale. Based on propensity scores, another 45 PD patients without sleep disturbance were matched to this group. We performed a comparative analysis of cortical thickness, diffusion tensor imaging-based white matter integrity, resting-state functional connectivity, and cognitive performance between PD patients with and without sleep disturbance.
  
  
  
  PD patients with sleep disturbance showed poorer performance in attention and working memory and a tendency toward a lower score in frontal executive function relative to those without sleep disturbance. The PD with sleep disturbance group exhibited widespread white matter disintegration compared to the PD without sleep disturbance group, although there were no significant differences in cortical thickness between the PD subgroups. On functional network analysis, PD patients with sleep disturbance exhibited less severely decreased cortical functional connectivity within the default mode network, central executive network, and dorsal attention network when compared to those without sleep disturbance.
  
  
  
  The present study suggests that sleep disturbance in PD patients could be associated with white matter and functional network alterations in conjunction with cognitive impairment.
authors.affiliation: Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea.|Jangseong Public Health Center, Jangseong, South Korea.
authors.forename: Seok Jong
authors.initials: SJ
authors.lastname: Chung
authors.affiliation: Department of Biomedical Engineering, Hanyang University, Seoul, South Korea.
authors.forename: Yong-Ho
authors.initials: YH
authors.lastname: Choi
authors.affiliation: Department of Biomedical Engineering, Hanyang University, Seoul, South Korea.
authors.forename: Hunki
authors.initials: H
authors.lastname: Kwon
authors.affiliation: Department of Biomedical Engineering, Hanyang University, Seoul, South Korea.
authors.forename: Yeong-Hun
authors.initials: YH
authors.lastname: Park
authors.affiliation: Department of Biomedical Engineering, Hanyang University, Seoul, South Korea.
authors.forename: Hyuk Jin
authors.initials: HJ
authors.lastname: Yun
authors.affiliation: Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea.
authors.forename: Han Soo
authors.initials: HS
authors.lastname: Yoo
authors.affiliation: Jangseong Public Health Center, Jangseong, South Korea.
authors.forename: Seock Hyeon
authors.initials: SH
authors.lastname: Moon
authors.affiliation: Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea.
authors.forename: Byoung Seok
authors.initials: BS
authors.lastname: Ye
authors.affiliation: Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea.
authors.forename: Young H
authors.initials: YH
authors.lastname: Sohn
authors.affiliation: Department of Biomedical Engineering, Hanyang University, Seoul, South Korea.
authors.forename: Jong-Min
authors.initials: JM
authors.lastname: Lee
authors.affiliation: Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea.|Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea.
authors.forename: Phil Hyu
authors.initials: PH
authors.lastname: Lee
mesh_terms: D000368:Aged; D001288:Attention / Q000502:physiology; D001931:Brain Mapping; D003072:Cognition Disorders / Q000503:physiopathology; D056324:Diffusion Tensor Imaging; D056344:Executive Function / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008568:Memory / Q000502:physiology; D008875:Middle Aged; D009483:Neuropsychological Tests; D010300:Parkinson Disease / Q000150:complications / Q000503:physiopathology*; D012893:Sleep Wake Disorders / Q000150:complications*; D066127:White Matter / Q000503:physiopathology*
keywords: Parkinson’s disease; cognition; functional connectivity.; sleep disturbance; white matter