All articles tagged with #fmri
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
A study using fMRI and large language models like GPT reveals that the human brain processes conversational content differently during speech production and comprehension, providing new insights into how meaning is organized across multiple timescales in the brain.
A new study suggests that using high-resolution fMRI to analyze brain responses to smell and sight could enable earlier detection of Parkinson's disease, potentially years before motor symptoms appear, by identifying specific patterns of reduced brain activity in these sensory areas.
A study from the University of Wurzburg reveals that intelligence is a global property of the brain, influenced by distributed connections rather than specific regions like the prefrontal cortex. Using fMRI data from over 800 individuals, researchers found that brain-wide connectivity better predicts general, crystallized, and fluid intelligence. This challenges existing models focused on localized brain areas and suggests that intelligence involves complex, system-wide brain interactions.
Researchers have developed a technique to directly "write" learning patterns into the brain using real-time neurofeedback from fMRI imaging, allowing participants to learn new visual categories without explicit teaching. This method, which shapes brain activity to align with predesignated patterns, could lead to innovative treatments for neuropsychiatric and developmental disorders by reshaping brain patterns. The study highlights the potential of implicit neural training and offers new insights into the brain's learning processes.
A groundbreaking study has revealed significant changes in brain activity across birth, with increased neuronal activity in regions like the sensorimotor, subcortical, and superior frontal networks. Researchers used fMRI scans of 140 fetuses and infants to analyze these changes, highlighting the brain's adaptation to the sensory-rich external environment post-birth. The study, published in PLOS Biology, suggests that while connectivity increases sharply, the efficiency of communication between neurons improves gradually, indicating a need for further research on brain development influenced by environmental factors.