Yan Cui, Min Li, Bharat B. Biswal et al.
preprint
Abstract: The default mode network (DMN) is a prominent intrinsic network that is observable in many mammalian brains. However, few studies have investigated the temporal dynamics of this network based on direct physiological recordings. Herein, we addressed this issue by characterizing the dynamics of local field potentials (LFPs) from the rat DMN during wakefulness and sleep with an...
Yanbin Zheng, Guang-Heng Dong, Harley Glassman et al.
preprint
Abstract Advice-giving is an important way to share life experiences and promote wisdom in society. We hypothesized that resting-state Default Mode Network (DMN) activity should be associated with increased wisdom when advising from a self-related perspective due to the DMN's involvement in reflection of personal life experiences. In our study, 52 participants provided advice on various life...
Bronte Ficek-Tani, Corey Horien, Suyeon Ju et al.
preprint
Abstract: Women show an increased lifetime risk of Alzheimer’s disease (AD) compared to men. Characteristic brain connectivity changes, particularly within the default mode network (DMN), have been associated with both symptomatic and preclinical AD, but the impact of sex on DMN function throughout aging is poorly understood. We investigated sex differences in DMN connectivity over the lifespan...
Pedro Nascimento Alves, Chris Foulon, Vyacheslav Karolis et al.
preprint
Abstract: Most existing research into the default-mode network (DMN) has taken a corticocentric approach. Despite the resemblance of the DMN with the unitary model of the limbic system, the anatomy and contribution of subcortical structures to the network may be underappreciated due to methods limitation. Here, we propose a new and more comprehensive neuroanatomical model of the DMN including...
Christopher N. Wahlheim, Alexander P. Christensen, Zachariah M. Reagh et al.
preprint
The ability to distinguish existing memories from similar perceptual experiences is a core feature of episodic memory. This ability is often examined using the Mnemonic Similarity Task in which people discriminate memories of studied objects from perceptually similar lures. Studies of the neural basis of such mnemonic discrimination have mostly focused on hippocampal function and connectivity....
Charlotte Murphy, Charan Ranganath, Matthias Gruber
preprint
Abstract: Consistent with the idea that curiosity enhances information seeking, it has been shown that activity within both the dopaminergic circuit and hippocampus supports curiosity-enhanced learning. However, the role of whole-brain mechanisms involved in cognitive control (fronto-parietal network; FPN) and memory integration (default mode network; DMN) that might underpin curiosity states...
Dian Lu, Emmanuel A. Stamatakis, Shruti Naik et al.
preprint
Abstract Brain activity is intrinsically organised into spatiotemporal patterns, but it is still not clear whether the intrinsic dynamical patterns are functional or epiphenomenal. Using a simultaneous fMRI-EEG implementation of a well-known bi-stable visual task, we showed that the latent transient states (~100-ms) in the intrinsic EEG oscillations can predict the upcoming involuntarily...
Simone Di Plinio, Sjoerd J H Ebisch
preprint
ABSTRACT: The brain is a complex system in which the functional interactions among its subunits vary over time. The trajectories of this dynamic variation contribute to inter-individual behavioral differences and psychopathologic phenotypes. Despite many methodological advancements, the study of dynamic brain networks still relies on biased assumptions in the temporal domain. The current paper...
Lorenzo Mancuso, Sara Cavuoti-Cabanillas, Donato Liloia et al.
preprint
Abstract: Recent developments in network neuroscience suggest reconsidering what we thought we knew about the Default Mode Network (DMN). Although this network has always been seen as unitary and associated with the resting state, a new deconstructive line of research is pointing out that the DMN could be divided into multiple subsystems supporting different functions. By now, it is well known...
D. Mastrovito, C. Hanson, S. Hanson
preprint
The default mode network (DMN) is a collection of brain regions including midline frontal and parietal structures, medial and lateral temporal lobes, and lateral parietal cortex. Although there is evidence that the network can be subdivided into at least two subcomponents, the network reliably exhibits highly correlated activity both at rest and during task performance. Current understanding...