Articles tagged with Electroencephalography
Researchers have found that the left hemisphere of the brain processes auditory speech information more rapidly than the right, thanks to a higher number of densely packed neurites in planum temporale. This microstructure is crucial for linguistic superiority.
Researchers at Vanderbilt University have developed an ultrasound helmet that can create real-time images of the brain during surgery, allowing for more precise control over software and robotics using only thoughts. The technology uses machine learning to account for distortion and integrate electroencephalogram (EEG) technology to pr...
A Carnegie Mellon University team has received a three-year grant to refine a custom EEG system that can identify early markers for worsening brain injuries. The team will use the high-density EEG to detect cortical spreading depolarizations, or brain tsunamis, which are biomarkers for worsening brain injuries.
Researchers found that a brief test can predict which patients will respond better to cognitive behavioral therapy (CBT) or antidepressant medication. Participants with enhanced error-related negativity (ERN) signals in their brain responded better to CBT, suggesting it may be more effective for them.
Researchers developed a multivariate method for predicting behavioral response to a stimulus using information about the phase of preceding neuronal oscillations. The study found that reaction speed depends on the phase of low-frequency neuronal oscillations preceding the stimulus.
Researchers have deciphered the mechanism of general anesthesia using statistical analysis, revealing oscillations that disrupt brain communication. The discovery enables real-time brain state monitoring and may lead to new recovery methods for elderly patients experiencing cognitive dysfunction after anesthesia.
A Massachusetts General Hospital study found that fMRI and EEG can identify covert consciousness in ICU patients, allowing families to make informed decisions about care. The tests detected activity in higher-order cortex areas of the brain, which could have implications for patient recovery.
Experts say international variation in brain death definition must be cleared up to improve management of patients at end-of-life and increase successful organ donation. A universal definition and procedure are needed to reduce confusion and restore professional and public trust.
A new computational approach developed at Boston Children's Hospital uses Granger causality analysis to identify the brain regions responsible for seizures. This technology enables surgeons to plan surgeries more accurately and reduce the risk of complications.
A new study suggests that the ability to assess group size is processed in the ancient brain structure of the subcortex, which is shared across humans, birds, and fish. This finding has implications for understanding mathematical thinking and education.
A study by Aalto University and the Helsinki Institute for Information Technology used EEG to model user interest in Wikipedia articles, predicting search intentions and recommending relevant documents. This technology has potential to assist humans by automatically monitoring and gathering information through wearable EEG sensors.
Two mouse mutants, Sleepy and Dreamless, have been identified with excessive and reduced rapid eye movement (REM) sleep, respectively. The mutations have been linked to specific genes, offering a new perspective on the regulation of sleep and wakefulness.
Mount Sinai researchers used EEG to study cue-induced craving in cocaine addicts and found that vulnerability to relapse peaks between one and six months of abstinence. This period coincides with patients' release from treatment programs, highlighting the need for alternative interventions to prevent relapse.
Researchers have developed a noninvasive method to measure cortical spreading depression, a brainwave linked to migraines and epilepsy, using scalp electrodes and specialized amplifier. This breakthrough could lead to better diagnosis and treatment of these conditions.
Researchers found a correspondence between a patient's ability to generate an EEG marker of attention and their ability to produce the critical clinical marker of awareness. This relationship existed for patients who could only follow commands with fMRI, making EEG a potential diagnostic tool for disorders of consciousness.
A study by Massachusetts General Hospital researchers reveals a distinctive EEG pattern associated with high-dose nitrous oxide anesthesia. This finding may help explain the drug's mechanisms and provide insights into the development of new anesthetics.
Research on face perception in Japanese children aged 8-13 years reveals that it almost matures by age 13, significantly earlier than previously observed in Western children. This study utilized EEG to analyze the N170 component and found significant differences between Japanese and Western children in terms of latency and peak detection.
A study by Ruhr-University Bochum scientists and colleagues identifies specific brain regions responsible for spatial memory. The researchers found that suppressing irrelevant activities improves spatial navigation accuracy.
Researchers at ETH Zurich have developed a novel gene regulation method that enables thought-specific brainwaves to control the conversion of genes into proteins. The system uses EEG headsets to transmit brainwaves wirelessly to an implant, which regulates gene expression through light-sensitive optogenetic modules.
A new study suggests that measuring how fast the brain responds to sights and sounds can help classify people on the autism spectrum and diagnose the condition earlier. The study found a strong correlation between the speed of processing auditory signals and the severity of autistic symptoms.
Researchers found that repeated-pulse transcranial magnetic stimulation at the Guangming point induces distinct electroencephalogram signal patterns compared to other stimulation points. The study also revealed changes in visual response complexity in parietal, central, and temporal regions following this stimulation.
Researchers found that frontal EEG lateralization is a key indicator of emotional flexibility, with left-sided lateralization associated with flexible responses and right-sided lateralization linked to inflexible ones. The study suggests that training can improve left-sided lateralization and enhance emotional flexibility.
A significant genetic component of Idiopathic Generalized Epilepsy (IGE) has been discovered, implicating a mutation in the gene for protein cotransporter KCC2. The study found a clear association between two variants of KCC2 and severe IGE in French-Canadian patients.
A new study by University of Cincinnati researchers found that only a small proportion of seizure patients receive electroencephalograms (EEGs) in the emergency department, which can lead to delayed or inaccurate diagnoses. The study suggests that this may impact admission decisions and hospital care for these patients.
Researchers found that repeated-pulse transcranial magnetic stimulation at the Guangming point evokes distinct patterns in electroencephalogram signals compared to other nearby points. This study suggests a potential therapeutic application of this stimulation technique for modulating brain activity.
A UT Arlington assistant professor has developed a computational model that can accurately predict when an epileptic seizure will occur next. The model analyzes EEG readings to provide early warnings, allowing patients to use medicine to combat an oncoming seizure.
Researchers found that the brain processes visual input at a level of understanding its meaning, even if we never consciously perceive it. The study used EEG monitoring to show that participants' brainwaves showed a signature, or N400 waveform, when viewing objects hidden in silhouettes.
Researchers found that brainwaves indicate the brain processes and understands hidden objects in everyday life, despite the subjects not consciously perceiving them. The study challenges existing models of how the brain processes visual information, suggesting a more complex role for the brain in interpreting visual input.
Researchers developed a real-time system for detecting and identifying epilepsy using a nonlinear dynamics index and support vector machine. The system effectively identifies epileptic electroencephalogram signals with good generalization ability, making it suitable for clinical applications.
Researchers analyzed EEGs from autistic children and found a structural difference in brain connections, including increased short-range and decreased long-range connections. This pattern may underlie autism's classic cognitive profile of focused tasks but poor integration across brain areas.
Researchers found that individuals with developmental prosopagnosia unconsciously recognized famous faces at an early stage but lost this information by the later stage. This suggests 'covert face recognition' where some part of the brain is aware of the face despite lack of conscious awareness
A new study published in The Lancet reveals that electroencephalography (EEG) can detect awareness in people previously thought to be in a permanently vegetative state. Three out of 16 patients showed repetitive and reliable EEG responses to commands, indicating covert awareness despite being behaviorally unresponsive.
Researchers at the University of Wisconsin-Madison discovered that certain nerve cells in a sleep-deprived yet awake brain can briefly enter a sleep-like state, negatively impacting performance. This 'local sleep' phenomenon affects specific groups of neurons in the motor cortex, leading to mistakes and decreased vigilance.
The US Neurology guidelines provide a framework for diagnosing and treating infantile spasms, with a focus on early intervention and personalized treatment strategies. The consensus among experts is that broad clinical evaluation, vigabatrin or adrenocorticotropic hormone (ACTH) as first-line treatment, and timely assessment of treatme...
Research categorizes meditation into three types: focused attention (beta/gamma activity), open monitoring (theta activity), and automatic self-transcending (alpha1 activity). Different techniques produce distinct results, and lumping them together can lead to inaccurate interpretations.
A research project at Universidad Carlos III de Madrid has successfully analyzed cerebral bioelectricity to detect epilepsy. The team developed an algorithm that extracts relevant characteristics from electroencephalograms, allowing for quick detection and classification of epileptic seizures.
The study proposes a theoretical model of the brain's coordination dynamics and applies a novel 4D colorimetric method to human neurophysiological data. It reveals that both integration and segregation occur in the brain, essential for its normal function.
A novel data analysis method has been developed that extracts representative spatial filters for each individual subject, reducing the need for calibration before every session. This approach may pave the way for practical daily use of brain-computer interfacing technology for both patients and healthy users.
Research shows that cigarette smoking is associated with restless sleep and reduced deep sleep hours, as well as increased light sleep. The study suggests that nicotine withdrawal may contribute to these disturbances, particularly in the early stages of sleep.
The American Academy of Neurology recommends a routine electroencephalogram (EEG) and brain scans, such as CT or MRI, for adults experiencing their first unprovoked seizure. These diagnostic tools can help identify brain abnormalities that caused the seizure and predict seizure recurrence in approximately one in four patients.
A study found that women with severe premenstrual syndrome (PMS) report poor sleep quality during the late luteal phase, while controls showed no significant differences. The researchers suggest that women with PMS may have underlying electroencephalogram trait markers.
A new case of vCJD in Japan highlights the potential for misdiagnosis, as the patient's EEG showed a rare brainwave pattern characteristic. This discovery suggests revising the WHO definition to prevent missing cases.
A novel experiment revealed that experts in fine visual distinctions can process faces and other objects using the same neural networks, contradicting previous theories. This discovery has implications for our understanding of autism, national security, and expert recognition abilities.
This article explores the use of computer technology to improve rehabilitation outcomes for individuals with spinal cord injuries, multiple sclerosis, and hearing losses. Studies demonstrate the effectiveness of neuroprosthetics, equinometers, brain-computer interfaces, telemedicine, and computer head controls in enhancing health, redu...
The American Academy of Neurology and the Child Neurology Society recommend EEG evaluation for children with a first nonfebrile seizure, providing insights into seizure type and potential recurrence risk. The guidelines also emphasize individualized evaluations and future research directions.