Tag

Neuroimaging

All articles tagged with #neuroimaging

adhd-research-news12 days ago•20 min saved

Brain signatures tied to emotional outbursts in kids with ADHD, study shows

A study of 123 children found that those with ADHD plus impairing emotional outbursts have thicker left dorsolateral prefrontal cortex and weaker resting-state connectivity between the DLPFC and networks involved in vision, attention, and salience, suggesting a distinct neural signature for severe emotion dysregulation in ADHD; however, causality can’t be determined from a cross‑sectional design, and short MRI scans and parental questionnaires limit interpretation.

via psypost.org|

#adhd #adhd-research-news #dlpfc

science17 days ago•6 min saved

Green Time, Brighter Minds: Nature Lowers Negative Emotions Across Real, VR, and Imagined Environments

A meta-analysis of 33 studies with 2,101 participants finds exposure to nature—outdoors, virtual reality, or imagined scenes—reduces negative emotions and supports brain health, with EEG and other neuroimaging data showing a more balanced emotional state. The researchers advocate integrating ‘Nature Rx’ into urban design to protect the population’s brain capital as urbanization rises.

via Neuroscience News|

#eeg #mental-health #nature

health21 days ago•4 min saved

When a Hair Wash Turns Into a Stroke Warning

A rare condition called beauty parlor stroke syndrome can occur when neck extension during a hair wash compresses the vertebral arteries, potentially causing a vertebral artery stroke. Risk factors include age, high cholesterol, and connective tissue disorders; symptoms such as dizziness, weakness, numbness, or sudden headache require urgent emergency evaluation with head CT and blood vessel imaging followed by MRI. Treatments range from observation to stroke therapies like clot-busting drugs or antiplatelets, and there’s a risk of recurrence—so patients are advised to avoid the triggering activity. Some salons are redesigning stations to reduce neck strain.

via MedPage Today|

#beauty-parlor-stroke-syndrome #health #neck-extension

neuroimaging22 days ago•28 min saved

Psilocybin reshapes brain rhythms and connectivity, predicting psychedelic intensity

An EEG study of 25 healthy volunteers shows psilocybin shifts the brain from a resting state to a dynamically engaged pattern by reducing slow theta/alpha power and increasing fast beta/gamma activity, with enhanced connectivity in the default mode network and parietal networks that correlates with the intensity of the psychedelic experience. Baseline fast-wave activity in frontal/emotional regions also predicted response to the drug. Using a double-blind, randomized crossover design (10–20 mg psilocybin vs placebo), researchers highlight potential biomarkers to guide psychedelic-assisted therapies, while noting limitations from the small, healthy-sample size and the need for clinical population studies and autonomic markers like heart-rate variability.

via PsyPost|

#brain-rhythms #default-mode-network #eeg

health24 days ago•5 min saved

AI on brain scans signals early Alzheimer’s risk with 93% accuracy

Researchers trained a machine-learning model on 815 MRI scans from the Alzheimer’s Disease Neuroimaging Initiative to distinguish healthy brains from mild cognitive impairment and Alzheimer’s, achieving 92.87% accuracy by measuring volume across 95 brain regions. The model highlights hippocampus, amygdala, and entorhinal cortex volume loss as strong indicators, with sex-related differences (left middle temporal cortex more affected in females; right entorhinal cortex in males). While promising for earlier detection and tailoring therapies, the study emphasizes the need for further validation and integration with other biomarkers before clinical use.

via Medical News Today|

#alzheimers-disease #artificial-intelligence #biomarkers

science28 days ago•7 min saved

Diversity Reveals Distinct Alzheimer's Biomarker Patterns

A large USC-led study from the HABS-HD cohort finds early Alzheimer’s biomarkers differ by race/ethnicity: Black and Hispanic participants showed higher tau in memory-related brain regions even when amyloid levels were similar to White participants, and the amyloid–cognition link varied by group. Scanner limitations and social determinants of health may also influence readings, underscoring the need for population-tailored diagnostics and more inclusive research.

via Neuroscience News|

#alzheimers-disease #amyloid #diverse-populations

science1 month ago•7 min saved

Puberty sharpens sex-based brain-network differences

A study of 1,286 people aged 8–100 using MRI finds sex differences in brain connectivity are minimal in early life but widen at puberty and persist into adulthood, in both structural and functional networks. The timing roughly tracks sex-hormone changes and may relate to differing risks of mental-health disorders between men and women. The work is a bioRxiv preprint and relies on birth sex data; some scientists caution that differences may reflect gender roles or a mosaic of brain features rather than a binary sex, so conclusions are preliminary.

via Nature|

#brain-connectivity #mental-health #neuroimaging

neuroimaging1 month ago•20 min saved

Polygenic anhedonia risk linked to altered reward-brain activity

A German neuroimaging study found that individuals with higher polygenic risk scores for anhedonia show distinct brain activity during a monetary incentive delay task: they exhibit decreased activation in the bilateral putamen and left middle frontal gyrus during reward anticipation and reduced right caudate activity during reward feedback. Higher risk is also associated with lower activity in the left middle frontal gyrus when anticipating losses and during salience processing, while there is heightened activity in the bilateral putamen and right caudate during loss feedback. The results highlight the involvement of striatal and prefrontal circuits in genetic risk for anhedonia, though replication and further research are needed.

via PsyPost|

#anhedonia #depression #fmri

neuroimaging2 months ago•21 min saved

Romance’s brain signature softens over time, study finds

Using fMRI with 47 heterosexual men, the study shows the nucleus accumbens encodes a romantic partner differently from friends early in romance, but as relationships endure the neural distinction fades, suggesting a shift from passionate love to companionate love; results are cross-sectional and limited in sample diversity.

via PsyPost|

#brain-plasticity #dopamine #neuroimaging

technology2 months ago•35 min saved

Prima: a health-system-scale MRI foundation model reshaping neuroimaging

A team trains Prima, a health-system-scale AI foundation model for MRI, using over 220,000 studies. In a one-year, system-wide study (29,431 MRIs across 52 neurologic diagnoses), Prima achieves a mean AUC of 92.0%, outperforming state-of-the-art models, and offers explainable predictions, radiologist worklist prioritization, and clinical referral recommendations. The model demonstrates algorithmic fairness across sensitive groups and leverages a hierarchical ViT with a VQ-VAE-based volume tokenizer and CLIP objective, aided by LLM-assisted report summarization. Data originates from the University of Michigan with MIT-licensed code; data sharing is governed by IRB and institutional agreements. Overall, the work showcases health system-scale AI training as a pathway to faster, fairer AI-driven neuroimaging in clinical care.

via Nature|

#fairness #foundation-model #health-system-scale

science2 months ago•17 min saved

Alcohol Reconfigures Brain Networks into Local Clusters

A double-blind, placebo-controlled study of 107 healthy social drinkers used resting-state fMRI and graph-theory analysis to show that acute alcohol intake (0.08 BAC) shifts the brain from a globally integrated network to a more fragmented, locally connected topology: global efficiency drops (notably in the occipital cortex) while local efficiency and clustering rise, effectively fracturing the brain into smaller communities. The insula also increases local connections, and these network changes correlate with how intoxicated participants felt. The findings offer a neural basis for alcohol-related sensory deficits and individual differences in intoxication, though limitations include incomplete cerebellum data and a young, healthy sample. Overall, intoxication appears to trade long-range integration for localized processing.

via PsyPost|

#alcohol #brain-network #neuroimaging

science2 months ago•8 min saved

AI-suspected technobabble prompts Springer Nature inquiry into prolific editor

A Turkish associate professor and editor, Eren Öğüt, faces a Springer Nature investigation after reviewers flagged multiple 2025 papers that read like technobabble, use irrelevant MATLAB code, and lack reproducible data or overlaid brain images. His unusually high volume of peer reviews (about 650 in one year) and roles as editor across journals raise concerns about editorial bias and integrity, with critics noting AI-assisted editing and a pattern of single-authored works that resemble prior templates. The investigation focuses on methodological gaps, data sharing, and potential misrepresentation of results in Neuroinformatics and related journals.

via Retraction Watch|

#academic-publishing #ai-in-research #neuroimaging

health-and-science4 months ago•6 min saved

Engaging in Creative Activities May Help Slow Brain Aging

Engaging in creative activities like dancing, music, art, or playing strategy video games is linked to a younger-looking brain and slower brain aging, with long-term practice providing stronger benefits. Even short-term creative training can improve brain aging markers, suggesting that regular creative engagement supports neural health and cognitive resilience.

via Neuroscience News|

#brain-aging #brain-health #brain-plasticity

science5 months ago•64 min saved

Advances in Brain Mapping and MRI Segmentation Technologies

NextBrain is a high-resolution, probabilistic human brain atlas built from multimodal histology and MRI data, enabling detailed segmentation and analysis of brain structures for research and clinical applications.

via Nature|

#brain-atlas #histology #mri-segmentation

science5 months ago•5 min saved

New Research Challenges Beliefs About Ultra-Processed Foods and Addiction

A study found that consuming a milkshake did not cause a significant dopamine release in the brain's reward region, challenging the idea that ultra-processed foods are highly addictive due to dopamine surges. The research showed individual variability in dopamine response, unrelated to body weight, and suggested that the reward response to such foods may be weaker than that of addictive drugs.

via PsyPost|

#addiction #dopamine #milkshake