Tag

Fmri

All articles tagged with #fmri

developmental-psychology10 days ago•28 min saved

Trauma reshapes how children's brains read caregiver cues

A study of 148 children aged 4–9 found that exposure to threat (abuse, witnessing domestic violence) is linked to greater insula activation when processing a caregiver’s cue, suggesting trauma makes caregiver signals more salient and engages interoceptive processing. Deprivation showed no similar effect, indicating adversities affect brain circuitry in distinct ways. The study used a multimodal fMRI task comparing caregivers to strangers and highlighted cross-sectional limits and the need to explore attachment and long-term mental health outcomes.

via PsyPost|

#caregiver-cues #childhood-trauma #developmental-psychology

science11 days ago•7 min saved

Cerebellum Hosts a Language Satellite Echoing the Brain’s Speech Network

New precision MRI work across 800+ participants reveals four cerebellar regions involved in language, including a right-posterior area that acts as a dedicated language satellite mirroring the neocortical language network. Most cerebellar regions also activate during non-linguistic tasks, suggesting the cerebellum helps integrate information across brain networks. The findings extend the language network into the cerebellum, with potential implications for language learning and aphasia therapy through non-invasive brain stimulation.

via Neuroscience News|

#aphasia #cerebellum #fmri

neuroimaging11 days 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

neuroscience20 days ago•17 min saved

Adolescent BPD Linked to Diminished Brain Control During Self-Identity Tasks

A neuroimaging study of drug-naïve adolescent girls with borderline personality disorder found reduced activation in the right dorsolateral prefrontal cortex and other regions during self-reflection compared with healthy controls, suggesting diminished cognitive control over identity processing; results hint that some social-cognition networks may be preserved, but generalizability is limited by the small, female-only sample and study design, underscoring the need for replication and longitudinal work.

via PsyPost|

#adolescents #borderline-personality-disorder #dorsolateral-prefrontal-cortex

science1 month ago•5 min saved

Brain Recounts: Shared Neural Ground for Episodic and Semantic Memory

A study with 40 participants using fMRI finds substantial overlap in brain regions activated during episodic and semantic memory retrieval, challenging the view that these are distinct memory systems and suggesting the whole brain participates in both types; findings could influence dementia research and interventions.

via Neuroscience News|

#episodic-memory #fmri #memory

science2 months ago•4 min saved

Challenges in Interpreting BOLD MRI Signals and Brain Metabolism

Recent research reveals that fMRI signals often misrepresent actual neural activity, with about 40% of cases showing increased signals where neural activity is reduced, due to regions extracting more oxygen without increased blood flow. This challenges long-standing assumptions in brain imaging and suggests a need for direct energy consumption measurements to better understand brain function and disorders.

via Neuroscience News|

#brain-disorders #brain-imaging #fmri

science2 months ago•64 min saved

Significant Discrepancies Found in fMRI and BOLD Signal Interpretations

Recent research indicates that up to 40% of fMRI signals may not accurately reflect actual brain activity, highlighting significant issues with signal interpretation, noise, and the reliability of fMRI as a tool for understanding neural processes.

via Hacker News|

#blood-flow #brain-activity #fmri

science4 months ago•8 min saved

Study Explains Why Time Feels Faster as We Age

A study using fMRI scans of people watching an Alfred Hitchcock show suggests that as we age, our brains experience fewer and longer-lasting neural states, which may contribute to the perception that time passes more quickly in older adults. This neural dedifferentiation could make it harder to distinguish between events, influencing our subjective experience of time.

via Live Science|

#brain-aging #cognitive-science #fmri

science5 months ago•1 min saved

Shared Brain Responses Suggest Common Perception of Colors

A study using fMRI and machine learning shows that different people's brains process and represent colours in a very similar way, suggesting a universal neural basis for colour perception.

via Nature|

#brain-activity #colour-perception #fmri

science6 months ago•5 min saved

New Brain Scans Explain Why Your Mind Goes Blank

Scientists used EEG and fMRI scans to study 'mind blanking,' a brief state where conscious thought stops, revealing that during this state, brain activity slows down and shows hyperconnectivity similar to deep sleep, possibly serving as a brain reset mechanism.

via Live Science|

#brain-activity #consciousness #eeg

science6 months ago•5 min saved

New Brain Scans Explain Why Your Mind Goes Blank

Recent brain scan studies reveal that 'mind blanking' is a distinct conscious state characterized by slowed and hyperconnected brain activity, similar to deep sleep, which may serve as a brain reset mechanism during wakefulness.

via Yahoo Home|

#brain #eeg #fmri

science7 months ago•6 min saved

Brain Distinguishes 'Stuff' from 'Things' with Different Neural Circuits

A study by MIT reveals that the brain uses separate neural circuits to process 'things' like objects and 'stuff' like liquids, with distinct regions in the visual cortex responding to each, which may help in planning physical interactions with different materials.

via Neuroscience News|

#brain #fmri #materials-processing

science7 months ago•1 min saved

Babies' Memory Skills Surprise Experts

A study using brain scans shows that babies as young as four months can form memories, with older infants demonstrating more complex memory activity, challenging previous beliefs about early memory capabilities and opening new avenues for understanding human development.

via NDTV|

#brain-development #early-childhood #fmri

science7 months ago•5 min saved

Decoding Social Emotions and Anxiety in the Brain

Research at Universitat Jaume I reveals that the anterior temporal lobe (ATL) is crucial for interpreting social and emotional cues, with heightened activity linked to anxiety. Advanced imaging techniques have helped uncover how ATL's connections and activity patterns influence emotional processing and mood disorders, highlighting the importance of understanding brain networks in mental health.

via Neuroscience News|

#anxiety #brain #fmri

science7 months ago•5 min saved

Brain Detects Others' Emotions Unconsciously

A new fMRI study shows that the brain encodes both the true emotional intent of others and our own inferences about their feelings, with greater alignment between these patterns leading to better empathic accuracy, even when we misjudge emotions.

via Neuroscience News|

#brain #empathy #fmri