Articles tagged with Consciousness
The new definition of syncope, including an aetiological requirement of reduced cerebral blood flow, provides a clearer picture of who and how many are affected by this common condition. The Guidelines identify three common types of syncope with different causes and risk profiles.
A study found that 41% of minimally conscious state patients were misdiagnosed as vegetative state, highlighting the need for standardized assessments. The use of a sensitive neurobehavioral scale can help reduce diagnostic errors and uncertainty.
Researchers at Vanderbilt University discovered that neural noise weakens and degrades the brain's representation of an ignored stimulus, making it harder to distinguish between similar orientations. This 'neural noise' also broadens the range of interfering orientations during suppression, further reducing fidelity.
High levels of brain energy are necessary for maintaining consciousness, according to Yale researchers. The study proposes that a conscious person requires a high level of brain energy, which supports human behavior and should be considered when interpreting fMRI signals.
A new case report suggests stun guns can cause seizures, particularly when shots are fired at the head. The study analyzed an incident where a police officer was mistakenly hit by a taser and experienced severe symptoms, including mild traumatic brain injury.
A new paper suggests that four specific processes occur only in conscious perception tasks, offering a unique insight into the neural correlates of consciousness. By studying brain activity of patients with epilepsy, researchers isolated four converging electrophysiological markers characterizing conscious access after word perception.
The European Society of Cardiology has reaffirmed its advice on cardiovascular risks associated with long-haul flights. Studies suggest that flight duration exceeding four hours increases the risk of venous thromboembolism (VTE) due to immobility, dehydration, and reduced oxygen in the cabin.
A new study by political scientists Jane Junn and Natalie Masuoka compares the racial consciousness of black and Asian-Americans, revealing that Asian Americans are less attached to their racial identity. The research explores how factors such as state-sponsored racial classification, immigration policy, and racial stereotypes influenc...
Sixteen- and 17-year-olds are more likely to experience donation-related complications such as fainting and bruising compared to older donors. Complications were found in 10.7% of donations by teens, with injuries from fainting being uncommon but severe enough to require medical care.
A team of scientists has made a significant breakthrough in understanding conscious perception by showing how single neurons react to perceived and nonperceived images. The study found that neurons respond with an 'all-or-none' firing rate when pictures are recognized, enabling the prediction of recognition beyond chance.
Researchers at Hebrew University of Jerusalem found that subliminal exposure to a national flag image can moderate political attitudes, voting intentions, and actual voting in general elections. The studies showed that participants exposed to the subliminal message tended to adopt more centrist views and voted for central parties.
Patients with focal epilepsy tend to underreport seizures, with up to 85.8% of nighttime seizures going unreported. Seizure documentation accuracy was not correlated with cognitive function or educational level, but patients who documented seizures had better verbal memory performance.
The Lancet launches a new series on Global Mental Health, emphasizing the need for better attention to mental health services. The initiative aims to track progress and monitor mental health indicators in the lead-up to a global summit.
A new study by Dennis Chong and Dukhong Kim explores how economic status affects racial and ethnic minority groups in the US. The research reveals that improved socioeconomic status generally diminishes group consciousness among most minorities, but African Americans retain their racial identity due to ongoing discrimination.
A patient with a disorder of consciousness (DOAC) has made a miraculous recovery after 19 years in a minimally conscious state. The study suggests that axonal re-growth may be the key to this recovery, allowing for functions like motor control and speech to resume.
A study by Clifford and Harris found that an 'invisible' image can influence the appearance of an image in the other eye, suggesting signals from the invisible image travel to the brain's occipital lobe. This challenges the long-held belief that the occipital lobe is the seat of visual consciousness.
A new evaluation tool, DOCS, reliably predicts recovery from coma by tracking neurobehavioral functioning changes. This allows for improved medical and rehabilitation management.
The study identifies five sub-categories of relational vulnerability: external orientation, socialization to violence and power abuse, caretaker identity, and cultural factors. Women from Black communities were more likely to stay in relationships due to strong race consciousness, despite negative societal expectations.
Researchers developed a new scale to predict recovery of consciousness from coma after brain injury. The Disorders of Consciousness Scale (DOCS) accurately detected improvements, declines, and plateaus in neurobehavioral functioning.
A study found that older age and altered level of consciousness are significant risk factors for in-hospital death in patients treated with clot-dissolving therapy after ischemic stroke. The risk of death decreased with increasing experience of the treating hospital, suggesting a need to prioritize these high-risk patients.
Researchers discovered that abnormal signals scattered across brain images, like a fireworks display, occur in patients who lose consciousness during seizures. In contrast, patients who don't lose consciousness have localized increases confined to the temporal lobe.
Researchers found that patients who lost consciousness for at least 12 hours were less likely to develop posttraumatic stress disorder compared to those who remained conscious. The study, which examined 46 inpatients with traumatic brain injuries, suggests that losing consciousness may be a protective factor against developing PTSD.
A study of 1,631 football players found that symptoms gradually resolved by day 7, cognitive functioning improved within 5-7 days, and balance deficits dissipated within 3-5 days after injury. However, approximately 10% of players required more than a week for symptoms to fully resolve.
A study found that athletes who experienced amnesia and confusion after a concussion were at risk of long-term neurocognitive deficits. Researchers recommend thorough evaluation and neuropsychological testing before returning to play.
A study by Penn State researchers found that high-credit-consciousness college students owned more credit cards, carrying an average balance of $686 per month. These students also showed lower levels of personal responsibility, blaming external factors for their lives instead of taking control.
Researchers studied brain activity in patients with epileptic seizures to understand how synchronized gamma waves contribute to conscious perception. The studies found that synchronized fast neural activity in the sensory area is necessary for perceiving simple stimuli.
A new test measuring visual field responses to discordant images has provided clues about the brain activity underlying visual consciousness. The researchers found that binocular rivalry occurs at a lower level in the visual cortex, specifically in the primary visual cortex.
University of Pennsylvania researchers have found that loss of consciousness is linked to specific angles of head rotation during car crashes. The study suggests that designing safer airbags and sports headgear could prevent or minimize coma in such incidents.