The brain’s action-mode network

Nature reviews. Neuroscience, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Language: Английский

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Suspending the Embodied Self in Meditation Attenuates Beta Oscillations in the Posterior Medial Cortex

Journal of Neuroscience, Journal Year: 2024, Volume and Issue: 44(26), P. e1182232024 - e1182232024

Published: May 17, 2024

Human experience is imbued by the sense of being an embodied agent. The investigation such basic self-consciousness has been hampered difficulty comprehensively modulating it in laboratory while reliably capturing ensuing subjective changes. present preregistered study fills this gap combining advanced meditative states with principled phenomenological interviews: 46 long-term meditators (19 female, 27 male) were instructed to modulate and attenuate their self-experience during magnetoencephalographic monitoring. Results showed frequency-specific (high-beta band) activity reductions frontoparietal posterior medial cortices (PMC). Importantly, PMC driven a subgroup describing radical self-disruptions, including suspension agency dissolution localized first-person perspective. Neural changes correlated lifetime meditation interview-derived experiential changes, but not classical self-reports. results demonstrate potential integrating in-depth methods into neuroscientific experiments. Furthermore, they highlight neural oscillations as central process supporting self.

Language: Английский

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Effects of vitamin D on brain function in preschool children with autism spectrum disorder: a resting-state functional MRI study

BMC Psychiatry, Journal Year: 2025, Volume and Issue: 25(1)

Published: March 3, 2025

Previous studies indicate vitamin D impacts autism spectrum disorder (ASD), but its relationship with brain function is unclear. This study investigated the association between serum 25-hydroxyvitamin [25(OH)D] levels and in preschool children ASD using resting-state functional magnetic resonance imaging (rs-fMRI), explored correlations clinical symptoms. A total of 226 patients underwent rs-fMRI scanning 25(OH)D testing. Clinical symptoms were assessed Childhood Autism Rating Scale (CARS) Behavior Checklist (ABC). Patients categorized into mild severe groups based on CARS, further divided normal (NVD), insufficient (VDI), deficient (VDD) levels. Changes among these analyzed regional homogeneity (ReHo), ABC scores used for correlation analysis. In ASD, ReHo increased right postcentral gyrus left precuneus VDI VDD compared to NVD, decreased bilateral middle cingulate superior frontal group VDI. occipital insula Correlation analysis revealed that was positively correlated body object use NVD groups, while negatively relating groups. language lower show multiple abnormalities, specific region alterations linked symptom severity. These findings enhance our understanding D's impact suggest future research may explore therapeutic potential.

Language: Английский

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Comment on Otgaar et al.: The neuroscience of dissociative amnesia and repressed memory: Premature conclusions and unanswered questions

Legal and Criminological Psychology, Journal Year: 2025, Volume and Issue: unknown

Published: March 29, 2025

Language: Английский

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Interoception, network physiology and the emergence of bodily self-awareness

Neuroscience & Biobehavioral Reviews, Journal Year: 2024, Volume and Issue: 165, P. 105864 - 105864

Published: Aug. 30, 2024

niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français étrangers, laboratoires publics privés.

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Insula-cortico-subcortical networks predict interoceptive awareness and stress resilience

Asian Journal of Psychiatry, Journal Year: 2024, Volume and Issue: 95, P. 103991 - 103991

Published: March 4, 2024

Interoception, the neural sensing of visceral signals, and interoceptive awareness (IA), conscious perception interoception, are crucial for life survival functions mental health. Resilience, capacity to overcome adversity, has been associated with reduced disturbances. Here, we sought evidence our Insula Modular Active Control (IMAC) model that suggest insula, a brain region specialized in processing information, realizes IA contributes resilience health via cortico-subcortical connections.

Language: Английский

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A review of the sufficient conditions for consciousness

Published: Nov. 8, 2023

How subjective experience (i.e., consciousness) arises out of objective material processes has been called the hard problem. The neuroscience consciousness set to find sufficient conditions for and theoretical empirical endeavours have placed a particular focus on cortex subcortex, whilst discounting cerebellum. However, when looking at neuroimaging research, it becomes clear there is substantial evidence that cerebellar, cortical, subcortical functions are correlated with consciousness. Neurostimulation suggests alterations in any part brain may provoke experience, but most extreme changes provoked via subcortex. I then evaluate neuropsychological abnormality experience; only damage oldest regions seem completely obliterate experience. Finally, review congenital experimental decorticate cases, behavioural compatible absence cortex. evidence, taken together, indicates body, subcortex environment likely behaviours suggest basic experiences. emphasise both importance individual’s developmental trajectory interdependencies between different neural systems.

Language: Английский

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Data processing techniques impact quantification of cortico-cortical evoked potentials

Journal of Neuroscience Methods, Journal Year: 2024, Volume and Issue: 408, P. 110130 - 110130

Published: April 21, 2024

Language: Английский

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Neuroscience-based relational art therapy and deep brain reorienting in the treatment of dissociative identity disorder

Frontiers in Psychology, Journal Year: 2025, Volume and Issue: 16

Published: Feb. 28, 2025

Art therapy (AT) has been proposed as a treatment for post-traumatic conditions, potentially by providing somatic sensory input that can (i) enhance the client’s sense of self and embodiment, (ii) modulate arousal, (iii) aid in rethinking reframing traumatic memories. However, evidence supporting AT dissociative disorders remains limited. The theoretical basis efficacy is discussed relation to findings regarding traumatized person’s brain mindset, well its altered functional network connectivity. It crucial consider specific alterations networks associated with trauma, particularly those occurring deep regions, which include midbrain, brainstem, cerebellum. hypothesis suggests early or severe trauma impair brain’s higher regulatory functions, explained cascade theory. This theory explains how diverse activation patterns within midbrain’s periaqueductal gray (PAG) midbrain influence limbic system cortices, thereby modulating states being behavior. Phase-specific, resource-oriented, long-term complexly individuals benefit from novel insights neuroimaging studies inform therapeutic methods. illustrated clinical vignette client diagnosed identity disorder (DID), where reorienting (DBR) was combined relational AT. component hypothesized have facilitated grounding present moment enhanced access her neurophenomenological self. Moreover, changes may occurred at implicit non-verbal levels. DBR believed helped remain previously avoided unbearable internal experience. To validate these assumptions, second author conducted semi-structured interview focused on experiences psychotherapy , including effect when introduced after were articulated through thematic analysis interview, yielded following themes: Loneliness, getting help moving towards togetherness . Further research development methods neuroplasticity necessary highly clients change heal are recommended.

Language: Английский

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Hubs and interaction: the brain’s meta-loop

Cerebral Cortex, Journal Year: 2025, Volume and Issue: 35(3)

Published: March 1, 2025

We must reconcile the needs of internal world and demands external to make decisions relevant homeostasis, well-being, flexible behavior. Engagement with (eg interoceptive) is linked medial brain systems, whereas extrapersonal space exteroceptive) associated lateral systems. Using Human Connectome Project data, we found three association tracts connecting action-related frontal lobe perception-related posterior lobes. A dorsal tract a interact independently ventral at hubs. The two hubs are interconnected, forming meta-loop that integrates four anatomical correspond common nodes intrinsic cognitive networks such as default mode network. These functional depend on integration both realms. Thus, positioning can be understood intersection long tracts. strength structural connectivity within systems correlates performance behavioral tests assessing theory mind. provides an framework associate neurological psychiatric symptoms changes.

Language: Английский

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