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Default mode network: all studies

Page 16 of 155: studies 151 to 160 of 1,549, newest first. Back to the default mode network overview

Research

Effect of increasing cognitive activity participation on functional connectivities within default mode network– a randomized controlled trial

Alzheimer s & Dementia December 1, 2024 Allen TC Lee

AbstractBackgroundWe previously reported that increasing participation in Chinese calligraphy handwriting, one of the “Four Arts” traditionally mastered by intellectuals in China and currently widely practiced by older adults in the Chinese community, led to better working memory among individuals with subjective cognitive decline (but without mild or major neurocognitive disorder). Given that...

Modulation of Posterior Default Mode Network Activity During Interoceptive Attention and Relation to Mindfulness.

Biological Psychiatry Global Open Science November 1, 2024 Dhakshin Ramanathan, Jason Nan, Gillian Grennan et al. 10 citations

Interoceptive attention to internal sensory signals, such as the breath, is fundamental to mindfulness. However, interoceptive attention can be difficult to study, with many studies relying on subjective and retrospective measures. Response consistency is an established method for evaluating variability of attention on exteroceptive attention tasks, but it has rarely been applied to...

Cognition, emotion, and the default mode network.

Brain and Cognition October 30, 2024 Nicola Sambuco

The Default Mode Network (DMN) is increasingly recognized as a key hub where cognitive and emotional processes converge, particularly through its role in integrating episodic memory and emotional experiences. The current mini-review highlights three distinct patterns of brain activity within the DMN associated with emotional processing. The first pattern indicates that, while the ventromedial...

A default mode network subsystem supports both item and associative word encoding: Insights from a meta-analysis

Imaging Neuroscience October 22, 2024 Hongkeun Kim

Abstract Recent meta-analytic evidence has underscored the significant role of the default mode network (DMN) in facilitating item word encoding. This study builds on this finding through a comprehensive meta-analysis of fMRI-based subsequent memory studies that use words as stimuli. The results highlight several key functions within the DMN. Firstly, the dorsomedial prefrontal cortex (dmPFC)...

Brain topology underlying executive functions across the lifespan: focus on the default mode network

Frontiers in Psychology September 4, 2024 A. Menardi, M. Spoa, A. Vallesi

IntroductionWhile traditional neuroimaging approaches to the study of executive functions (EFs) have typically employed task-evoked paradigms, resting state studies are gaining popularity as a tool for investigating inter-individual variability in the functional connectome and its relationship to cognitive performance outside of the scanner.MethodUsing resting state functional magnetic...

Differences Between Resting-State fMRI BOLD Variability and Default Mode Network Connectivity in Healthy Older and Younger Adults

Brain Connectivity September 1, 2024 Vanessa Scarapicchia, Heather Kwan, Alexis Czippel et al.

Background: Resting-state fMRI analyses have been used to examine functional connectivity in the aging brain. Recently, fluctuations in the fMRI BOLD signal have been used as a potential marker of integrity in neural systems. Despite its increasing popularity, the results of BOLD variability analyses and traditional seed-based functional connectivity analyses have rarely been compared. The...

Alterations in dynamic regional homogeneity within default mode network in patients with thyroid-associated ophthalmopathy

Neuroreport August 7, 2024 Ping-Hong Lai, Rui-Yang Hu, Xin Huang

Thyroid-associated ophthalmopathy (TAO) is a significant autoimmune eye disease known for causing exophthalmos and substantial optic nerve damage. Prior investigations have solely focused on static functional MRI (fMRI) scans of the brain in TAO patients, neglecting the assessment of temporal variations in local brain activity. This study aimed to characterize alterations in dynamic regional...

Altered structural node of default mode network mediated general cognitive ability in young adults with obesity.

Progress in Neuro-Psychopharmacology and Biological Psychiatry August 1, 2024 Shengjie Xu, Kezhen Lv, Yuqi Sun et al.

BACKGROUND Obesity, characterized by excessive adiposity, is associated with brain structural abnormalities. Nevertheless, the relationships between altered structural node of default mode network (DMN), body mass index (BMI), general cognitive ability remained unclear in young adults. METHODS In this study, we divided a large sample of young adults into three BMI-based groups. We then...

Particulate Matter Exposure and Default Mode Network Equilibrium During Early Adolescence

Brain Connectivity August 1, 2024 Clara G. Zundel, Samantha L Ely, Cole Brokamp et al.

Background: Air pollution exposure has been associated with adverse cognitive and mental health outcomes in children, adolescents, and adults, although youth may be particularly susceptible given ongoing brain development. However, the neurodevelopmental mechanisms underlying the associations among air pollution, cognition, and mental health remain unclear. We examined the impact of particulate...