Children and adolescents with autism have a surplus of synapses in the brain, and this excess is due to a slowdown in a normal brain "pruning" process during development, according to a study by neuroscientists ...
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A subarachnoid hemorrhage (SAH, /ˌsʌbəˈræknɔɪd ˈhɛmᵊrɪdʒ/), or subarachnoid haemorrhage in British English, is bleeding into the subarachnoid space—the area between the arachnoid membrane and the pia mater surrounding the brain. This may occur spontaneously, usually from a ruptured cerebral aneurysm, or may result from head injury.
Symptoms of SAH include a severe headache with a rapid onset ("thunderclap headache"), vomiting, confusion or a lowered level of consciousness, and sometimes seizures. The diagnosis is generally confirmed with a CT scan of the head, or occasionally by lumbar puncture. Treatment is by prompt neurosurgery or radiologically guided interventions with medications and other treatments to help prevent recurrence of the bleeding and complications. Surgery for aneurysms was introduced in the 1930s, but since the 1990s many aneurysms are treated by a less invasive procedure called "coiling", which is carried out by instrumentation through large blood vessels.
SAH is a form of stroke and comprises 1–7% of all strokes. It is a medical emergency and can lead to death or severe disability—even when recognized and treated at an early stage. Up to half of all cases of SAH are fatal and 10–15% of casualties die before reaching a hospital, and those who survive often have neurological or cognitive impairment.
(HealthDay)—Using two types of polio vaccines seems to provide stronger protection against the disease and may boost efforts to eradicate polio, a new study shows.
Strongly influenced by their self-interest, humans do not protest being overcompensated, even when there are no consequences, researchers in Georgia State University's Brains and Behavior Program have found.
Johns Hopkins stem cell biologists have found a way to reprogram a patient's skin cells into cells that mimic and display many biological features of a rare genetic disorder called familial dysautonomia. ...
University of Utah scientists have developed a genetically engineered line of mice that is expected to open the door to new research on epilepsy, Alzheimer's and other diseases.
For many people, finding motivation to exercise is a challenge. Thankfully, there are Zombies chasing you.
(Medical Xpress)—A team of researchers with members from facilities in Finland, the U.S., and the U.K. has found a way to mimic the process that leads to folds in mammalian brains. In their paper published ...
Calcium buildup in the coronary arteries may be a better indicator of kidney disease patients' risk of heart disease than traditional risk factors used in the general population, according to a study appearing in an upcoming ...
(HealthDay)—When it comes to achieving orgasms during sex with a regular partner, straight women still lag behind men and lesbian women, a new study suggests.
(HealthDay)—An experimental drug shows promise in treating respiratory syncytial virus (RSV), a leading cause of pneumonia in infants, researchers report.