Articles tagged with Functional Magnetic Resonance Imaging
Researchers used high-resolution fMRI to identify where Alzheimer's disease starts, spreads from the lateral entorhinal cortex (LEC) to other areas of the cerebral cortex. LEC dysfunction occurs when changes in tau and amyloid precursor protein (APP) co-exist, damaging neurons that then spread to adjoining regions.
Researchers at Tel Aviv University used fMRI to show that patients in a vegetative state can react emotionally to photographs of family and friends, suggesting they may be aware of their loved ones' presence. The study's findings provide hope for improved care and treatment for these patients.
Researchers at Emory University have confirmed their methods and results by replicating a previous study involving 13 dogs. The experiment showed that most dogs exhibited a positive response in the caudate region when given a hand signal indicating a treat, suggesting similarities with human brain function.
Researchers at Western University found that neurofeedback training can alter key brain networks linked to post-traumatic stress disorder (PTSD), leading to improved subjective well-being. The study used a combination of EEG and fMRI techniques to measure changes in brain activity and connectivity after a 30-minute neurofeedback session.
A novel rehabilitation device converts thoughts into electrical impulses to improve motor function in stroke patients, enabling them to perform activities of daily living. The device showed promising results in improving motor skills and quality of life for patients with moderate severity strokes.
A new Dartmouth study suggests that chronic dieters overeat when their brain regions that balance impulsive behavior and self-control are disrupted. This depletion reduces a person's ability to engage in self-control by reducing connectivity between brain regions involved in cognitive control and rewards.
A new study by Kessler Foundation scientists investigates the neural correlates of cognitive fatigue in multiple sclerosis using functional magnetic resonance imaging and diffusion tensor imaging. The findings suggest a 'fatigue-network' in persons with MS, which could help define the pathophysiology of this symptom.
Researchers found greater BOLD activation in brain areas typically activated by MS patients during task performance when exposed to warmer temperatures. This suggests neural inefficiency and may impact independence, education, employment, and daily activities.
A study of retired NFL players found abnormal brain activity in the frontal lobe, which may indicate executive function deficits and increased risk of neurodegenerative diseases like Alzheimer's and Parkinson's. The results suggest that fMRI can detect subtle neurological problems not picked up by standard clinical tests.
Researchers found that consciousness does not reside in a specific area of the brain but rather arises from the communication among billions of neurons. The study provides an initial step toward developing a scientific definition of consciousness.
A new USC study found that the brain activates more strongly to watching hateful people suffer compared to likable individuals. The 'pain matrix' of the brain is thought to be involved in processing complex social situations, and this study suggests it may prioritize monitoring enemies over loved ones.
Kessler Foundation collaborates with VA New Jersey Health Care System on a $761,222 grant to examine cognitive fatigue in Gulf War veterans using fMRI. The study aims to establish the set of brain regions critical to fatigue and develop treatments. Cognitive fatigue affects 25% of veterans, impacting daily life.
Scientists have finally mapped the brain region responsible for numerosity, distinguishing between small and large quantities. The discovery reveals a topographical layout of numerosity in the human brain, with neurons organized to facilitate communication and interaction over short distances.
A small study using functional magnetic resonance imaging found that three non-responsive patients could follow commands and communicate through selective auditory attention. The study suggests that this technique assesses basic human cognition, including reasoning and information processing.
Researchers used magnetoencephalography to track brain activity at high temporal resolution, revealing new distinctions in resting and active brain regions. The study provides novel insights into how brain networks function in cooperative groups, which is essential for better diagnosis and treatment of brain injuries.
Researchers used fMRI and EEG to study brain function, mapping a previously unexplored aspect of brain activity. They found that post-stimulus signal in fMRI reflects changes in brain signalling, not just blood flow.
A recent study found that patients with major depressive disorder exhibit abnormal activation of the occipital lobes when processing emotions, leading to cognitive dysfunction. This abnormality may be an initiating factor for depression onset, resulting in attention deficit disorder.
Researchers at Vanderbilt University used fMRI to map the brain's resting state network, confirming its relationship with anatomical structure. The study provides new insights into neural connectivity and its potential applications in diagnosing mental health disorders.
Researchers at Carnegie Mellon University have identified which emotion a person is experiencing based on brain activity using machine learning techniques. The study, led by Karim Kassam, achieved high accuracy levels in identifying emotions from fMRI data and has potential applications in assessing emotional responses to various stimuli.
Researchers at the University of Washington have developed a low-cost fiber-optic pen that tracks brain activity in real-time while children with learning disabilities read and write. The device, which costs less than $100, allows scientists to study the neural connections involved in writing and reading.
A study using fMRI found that stroke patients' brains exhibit strongest activity in damaged hemisphere regions when viewing actions they struggle with. This suggests a potential therapeutic technique using action-observation to drive plasticity and improve motor function.
Scientists at Kessler Foundation received grants to investigate emotional processing deficits in individuals with traumatic brain injury (TBI) and the effects of aerobic exercise on memory impairments. The studies aim to develop innovative rehabilitation interventions using objective data from brain imaging.
Researchers can now study song acquisition, storage, and regurgitation in songbirds using MRI, providing parallels to human language acquisition. This technique allows for repeated, long-term developmental measurements of the brain, shedding light on learning, language, and neuroendocrinological plasticity.
A recent study published in Frontiers in Human Neuroscience reveals that healthy individuals who experience auditory hallucinations have a unique brain response compared to those without mental illness. The researchers discovered that the primary auditory cortex of these individuals reacts less to external stimuli, allowing them to dir...
A new imaging technique developed by Jean Gotman and his colleagues combines electroencephalogram (EEG) and functional magnetic resonance imaging (fMRI) to more precisely localize the areas generating epileptic seizures. This allows neurosurgeons to better understand the optimal ways of intervention for patients with epilepsy.
Functional MRI studies show that methylphenidate alters brain activity patterns in areas like frontal lobes and basal ganglia in young patients with ADHD. The medication partially normalizes brain function in these regions, suggesting potential therapeutic benefits for ADHD symptoms.
Researchers have identified the V5 region of the brain as the site of motion prediction, enabling humans to perceive objects at predicted locations despite visual processing delays. This discovery has implications for understanding and diagnosing disorders affecting motion perception.
A new study using fMRI brain scans aims to detect memories and identify lies. Researchers have successfully decoded patterns of brain activity associated with recognition, but struggled to determine actual past experiences. The technology's limitations raise questions about its use in legal settings.
Researchers found a consistent pattern of activity across individuals in several brain structures, including those involved in movement planning, memory, and attention. The study suggests that higher-level centers direct subcortical auditory structures to respond preferentially to music.
Researchers developed a quick and simple fMRI task to localize critical brain areas governing speech and other functions. The new protocol accurately localized the anterior and posterior language areas of the brain in about 90% of subjects, including patients undergoing surgery for epilepsy or tumors.
Researchers found that a compensatory reorganization of language function to right hemispheric brain regions impeded post-stroke aphasia recovery in adults. In contrast, children who experience left-hemispheric injury or stroke may benefit from such a shift.
A new center at Northwestern University will study over 200 patients to better understand how language is processed and recovers in healthy people and those with stroke or neurological diseases. The center aims to challenge existing clinical practices and promote treatment options for individuals with chronic aphasia.
Researchers discovered that a reward linked to an image can activate the visual cortex in rhesus monkeys, indicating that rewards influence visual processing. The study used fMRI scans and found that dopamine signaling plays a key role in this process.
Researchers at Georgetown University Medical Center found physical changes in brain fibers connecting pain and fatigue processing areas. Anomalies were detected in nerve fiber bundles, providing insight into Gulf War Illness symptoms.
Researchers at Cornell University found that brain activity patterns in the medial prefrontal cortex can accurately identify an individual's thought process about a person. This unique ability allows us to anticipate behavior and navigate social interactions with greater ease.
A new study by Columbia University researchers found that the infant brain does not control its blood flow in the same way as the adult brain. With increasing age, the immature brain gradually developed its ability to increase local blood flow and generate a large blood-flow response.
Researchers found increased activation in brain regions utilized by typically developing kids after four months of Pivotal Response Treatment. This suggests improved social engagement and processing of low-level social stimuli. The study's findings have implications for early intervention and potential long-term benefits.
A new study identified two neighboring areas of the cortex as processing different types of visual information independently. The researchers used magnetic fields to disrupt neural activity, revealing that one area plays a causal role in processing orientation, while another underpins shape recognition based on curvature differences.
A new USC study found that the brain works hard to understand those with different bodies when watching them in action. Increased visual exposure improves understanding and can alleviate stigma. Individuals with higher empathy levels showed more activity in motor regions when observing actions made by residual limbs.
The article highlights the contributions fMRI has made to understanding human thought over the past two decades, with some researchers questioning its usefulness. The special section features 12 provocative articles exploring the impact of fMRI on cognition and brain function.
Researchers used brain scans to study how children's brains develop intellectual abilities like reading and math while watching Sesame Street. The study found that children whose neural maps resembled those of adults scored higher on standardized tests, suggesting that the brain develops along predictable pathways as we mature.
Researchers mapped out how 1,705 distinct object and action categories are represented across the brain's surface, finding a continuous semantic space that organizes similar categories together. The study's results demonstrate an efficient way for the brain to represent diverse categories in a compact spatial manner.
Researchers used functional magnetic resonance imaging (fMRI) to monitor activity in brains of sleep-deprived volunteers. The study found decreased activity in specific brain regions, including the anterior cingulate cortex, linked to feelings of mental fatigue. This discovery could lead to the development of new measures for assessing...
Researchers have identified specific brain areas that interact to compute confidence in decisions, allowing individuals to assess their choices. The study used fMRI to measure activity in the brains of volunteers while they made food choice decisions.
Researchers combine EEG and fMRI data to transform brain wave patterns into free-form music, providing a platform for scientists and artists to better understand the links between music and the human brain. The study reveals an improved method to reflect the physiological processes of the scale-free brain in music.
A study found that 8-week meditation training can alter brain function even outside of meditation. Different forms of meditation may have distinct effects on the amygdala, a key structure for emotion processing.
A study published in the Journal of Neuroscience identified two brain regions involved in making rapid judgments about potential partners. The paracingulate cortex and rostromedial prefrontal cortex are active when people consider physical attractiveness and individual compatibility, respectively.
A compassion-based meditation program can improve a person's ability to read facial expressions, finds a study published by Social Cognitive and Affective Neuroscience. The Cognitively-Based Compassion Training (CBCT) program significantly increased neural activity in areas of the brain important for empathy.
The study uses functional MRI to measure brain activity and identifies a precise statistical relationship between brain structure and visual representation. This breakthrough can guide efforts to restore vision using neural prosthetics.
Dr. Chiaravalloti discusses the potential of functional MRI and behavioral therapies to target cognitive deficits in MS patients. Research suggests that these approaches may be effective in improving learning, memory, and processing speed in individuals with MS.
Researchers found that nerve cells in the posterior medial cortex (PMC) are strongly activated during recall tasks but suppressed when performing mathematical calculations. This study provides new insights into the brain's introspective activities and highlights the importance of the PMC region.
Researchers at Mayo Clinic discover leukoaraiosis is a disease that alters brain function, affecting language processing and network activity. Moderate levels of the condition lead to decreased activation in key areas, while high blood pressure may also play a role.
Patients with hoarding disorder showed abnormal brain activity when deciding about possessions, with reduced activity for items not belonging to them and increased activity for items that did. The study found that these patients had difficulty discarding possessions, with fewer items discarded compared to healthy individuals.
Researchers found that vivid memory and real perceptual experience share striking similarities at the neural level, but not in every detail. The study used fMRI to analyze brain activity while participants watched video clips and then recalled them, finding a 91% match in sensory and motor areas of the cerebral cortex.
Researchers have developed a real-time brain-scanning speller that allows people with paralysis to engage in unscripted conversations. The technology uses fMRI and mental tasks to encode thoughts letter-by-letter, enabling back-and-forth communication.
A new invasive imaging technique monitors brain function in patients with diseases such as epilepsy, providing real-time analysis at a higher resolution than current technologies. The procedure uses pre-placed electrodes to image the brain, offering unprecedented insight into its function.
Researchers discovered that the dorsal anterior cingulate cortex (dACC) optimizes behavioral responses by predicting task difficulty. The study used a complex task to evaluate dACC function, revealing that the structure speeds up responses when difficulty levels are constant but slows down response time when faced with changing demands.
A University of Iowa study using fMRI images shows the anterior cingulate cortex fires with equal intensity during self-control tasks, while the dorsolateral prefrontal cortex fires less intensely after prior exertion. This depletion can lead to impulsive decisions, making therapies that focus on implementation stages more effective.
Researchers at Tel Aviv University have developed a novel approach to probing the susceptible brain using electroencephalography and functional magnetic resonance imaging. This allows for ongoing monitoring tailored to each individual, enabling early or preventive intervention.
Researchers found a strong link between post-stroke depression and brain network impairment, specifically in the default-mode network (DMN), which is involved in emotional regulation. The study suggests that functional brain impairment may be more critical than structural lesions in predicting depression severity.