NeuroImage: Clinical
November 5, 2016
P. Boord, T. Madhyastha, M. Askren et al.
Attention dysfunction is a common but often undiagnosed cognitive impairment in Parkinson's disease that significantly reduces quality of life. We sought to increase understanding of the mechanisms underlying attention dysfunction using functional neuroimaging. Functional MRI was acquired at two repeated sessions in the resting state and during the Attention Network Test, for 25 non-demented...
Human Brain Mapping
October 27, 2016
P. Karunanayaka, Donald A. Wilson, Michael J. Tobia et al.
Default mode network (DMN) deactivation has been shown to be functionally relevant for goal‐directed cognition. In this study, the DMN's role during olfactory processing was investigated using two complementary functional magnetic resonance imaging (fMRI) paradigms with identical timing, visual‐cue stimulation, and response monitoring protocols. Twenty‐nine healthy, non‐smoking, right‐handed...
The Journal of Headache and Pain
October 22, 2016
Jilei Zhang, Jing-Jing Su, Mengxing Wang et al.
BackgroundThe precuneus/posterior cingulate cortex, which has been associated with pain sensitivity, plays a pivotal role in the default mode network. However, information regarding migraine-related alterations in resting-state brain functional connectivity in the default mode network and in local regional spontaneous neuronal activity is not adequate.MethodsThis study used functional magnetic...
Human Brain Mapping
October 14, 2016
Samantha Cunningham, Dardo G. Tomasi, Nora D. Volkow
221 citations
Neuroimaging studies have identified functional interactions between the thalamus, precuneus, and default mode network (DMN) in studies of consciousness. However, less is known about the structural connectivity of the precuneus and thalamus to regions within the DMN. We used diffusion tensor imaging (DTI) to parcellate the precuneus and thalamus based on their probabilistic white matter...
Neuroscience Letters
October 4, 2016
Connie Svob, Zhishun Wang, Myrna M Weissman et al.
Individuals at high risk for depression have increased default mode network (DMN) connectivity, as well as reduced inverse connectivity between the DMN and the central executive network (CEN) [8]. Other studies have indicated that the belief in the importance of religion/spirituality (R/S) is protective against depression in high risk individuals [5]. Given these findings, we hypothesized that...
BMC Psychiatry
September 29, 2016
Shuang Zhang, Jian-Mei Chen, L. Kuang et al.
BackgroundSuicide is the second leading cause of death among 15- to 29-year-olds in China, and 60 % of suicidal patients have a history of depression. Previous brain imaging studies have shown that depression and suicide may be associated with abnormal activity in default mode network (DMN) regions. However, no study has specifically investigated the relationship between DMN functional activity...
Nature Communications
July 18, 2016
Erez Simony, Christopher J Honey, Janice Chen et al.
689 citations
Does the default mode network (DMN) reconfigure to encode information about the changing environment? This question has proven difficult, because patterns of functional connectivity reflect a mixture of stimulus-induced neural processes, intrinsic neural processes and non-neuronal noise. Here we introduce inter-subject functional correlation (ISFC), which isolates stimulus-dependent...
Neuroimage
July 15, 2016
Aviva Berkovich-Ohana, Michal Harel, Avital Hahamy et al.
Recently we proposed that the information contained in spontaneously emerging (resting-state) fluctuations may reflect individually unique neuro-cognitive traits. One prediction of this conjecture, termed the "spontaneous trait reactivation" (STR) hypothesis, is that resting-state activity patterns could be diagnostic of unique personalities, talents and life-styles of individuals. Long-term...
PLoS One
June 14, 2016
Olga Prilipko, Nelly Huynh, Sophie Schwartz et al.
INTRODUCTION: Functional magnetic resonance imaging studies enable the investigation of neural correlates underlying behavioral performance. We investigate the effect of active and sham Continuous Positive Airway Pressure (CPAP) treatment on working memory function of patients with Obstructive Sleep Apnea Syndrome (OSAS) considering Task Positive and Default Mode networks (TPN and DMN)....
Frontiers in Human Neuroscience
June 2, 2016
Fabiana M. Carvalho, Khallil Taverna Chaim, Tiago Arruda Sanchez et al.
26 citations
The updating of prospective internal models is necessary to accurately predict future observations. Uncertainty-driven internal model updating has been studied using a variety of perceptual paradigms, and have revealed engagement of frontal and parietal areas. In a distinct literature, studies on temporal expectations have also characterized a time-perception network, which relies on temporal...