The default mode network (DMN) is a collection of interconnected transmodal brain regions that is engaged during internally oriented thought processes. It has been linked with multiple functions, including self-referential judgment, social cognition, episodic memory, and semantic memory. In an effort to identify a unitary overarching purpose of the DMN, Menon [Menon, V. 20 years of the default...
MRI is a noninvasive imaging technique that measures the neurological activity of a person’s brain over time. The BOLD signal, which represents variations in blood oxygenation associated with brain activity, is what it depends on.The investigation of functional connectivity emphasizes on the timevarying spontaneous variations in these BOLD signals. Functional connectivity measures the...
Socioeconomic hardship (SES-H) is a known risk factor for adolescent suicidal thoughts and behaviors (STB). This study examined sleep health as a pathway linking SES-H to suicide risk and evaluated the moderating role of Default Mode Network (DMN) coherence. Data came from three waves of the Adolescent Brain Cognitive Development (ABCD) Study (N = 11,878). Increased SES-H predicted greater...
The Default Mode Network (DMN) is associated with an internal self-referential view of the world, and its intrinsic properties have been linked to different cognitive abilities. While its function and structure has been well characterized through functional magnetic resonance imaging (fMRI), much less is known about its behavior using electroencephalography (EEG). This study examines the...
The therapeutic potential of psychedelic substances faces limitations due to safety and legal concerns. This study explores a non-pharmacological alternative using a brain-computer interface (BCI) within a Virtual Reality (VR) environment to modulate Default Mode Network (DMN) activity, specifically targeting the Posterior Cingulate Cortex (PCC). We present an offline validation of an EEG...
The neural foundations of the Dark Triad (DT) personality traits-narcissism, Machiavellianism, and psychopathy-remain largely unexplored despite their profound impact on social behavior. Previous research has indicated potential structural and functional alterations in the default mode network (DMN) and reward-related regions in individuals exhibiting high levels of DT traits. However, these...
NeuroimageOctober 6, 2025Chun-Wei Hsu, Shu-Lan Hsieh, Wan-Rue Lin et al.
Dynamic variations of information in our environment constantly influence our thoughts, requiring the brain to regulate its internal state transitions to maintain stable psychological functioning. Presumably, effective regulation of brain state transitions — defined as changes from one functional state to another over time — reflects psychological resilience whereas failure to adapt can lead to...
NeuropsychologiaOctober 3, 2025Guanghui Zhai, Yang Feng, Xin Ling et al.
Human attention is a limited resource increasingly taxed by continuous, socially embedded media streams, but how habitual short-video use shapes core attentional operations and their neural substrates remains unclear. Here we distinguish active from passive short video usage and examine whether they differentially relate to the alerting, orienting, and executive components of attention and to...
NeuroimageOctober 1, 2025Chang-hyun Park, Song E. Kim, Y. Choi et al.
Transcranial focused ultrasound (tFUS) has emerged as a promising noninvasive technique for brain stimulation due to its precise focusing and deep penetration capabilities. However, its potential to modulate brain networks beyond the stimulation site and optimal sonication parameters required for such modulation remain unclear. In light of this knowledge gap, this study investigates the effects...
Objective: To investigate, using functional magnetic resonance imaging (fMRI) techniques, the immediate and sustained effects of acupuncture on functional connectivity (FC) within the default mode network (DMN) and external FC. Methods: Thirty healthy participants received acupuncture needle stimulation at Baihui (GV20) and Yintang (GV29) and underwent resting-state fMRI scans in three phases:...