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Circuit model may explain how deep brain stimulation treats Parkinson’s disease symptoms

Stimulation of subthalamic nucleus interrupts a cycle of runaway beta-frequency rhythms and restores ability of interneurons to regulate rhythms in the brain’s striatum, improving movement, study suggests.

How sleep helps to process emotions

Researchers have identified how the brain triages emotions during dream sleep to consolidate the storage of positive emotions while dampening the consolidation of negative ones. The work expands the importance of sleep in mental health and opens new wa…

Chemists synthesize psychotropic compound from rainforest tree

Scientists found a chemical from a rainforest tree that binds to opioid receptors in the brain and may have utility as an antidepressant or anti-anxiety drug.

Treatment minimizes infants’ opioid-related brain abnormalities

Researchers have evidence validating the benefits of using medication for opioid use disorder during pregnancy. Brain imaging revealed significant improvements in brain function after treatment.

Dementia: Combination of ‘feelings’ and measurements suggest Alzheimer’s in the early stage

Subjective memory disorders in conjunction with conspicuous levels of beta-amyloid proteins in the cerebrospinal fluid are a strong indication of developing Alzheimer’s disease. This is the conclusion of a new study involving about 1,000 older adults.

A brain circuit in the thalamus helps us hold information in mind

Researchers have identified a circuit in the anterior thalamus that is necessary for remembering how to navigate a maze. This region could offer a promising target for treatments that could help reverse memory loss in older people, without affecting ot…

Study finds increased risk of dementia after hospitalization for major TBI

People who have been hospitalized for a major traumatic brain injury (TBI) may have a higher risk of developing dementia when compared to people who do not have a TBI, according to a new study. Major TBI was defined as having bleeding in the brain and …

When unconscious, the brain is anything but ‘silent’

The cerebral cortex is thought to be the seat of conscious processing in the brain. Rather than being inactivated, specific cells in the cortex show higher spontaneous activity during general anesthesia than when awake, and this activity is synchronize…

Key protein identified for brain stem cell longevity

A receptor that was first identified as necessary for insulin action, that also is located on the neural stem cells found deep in the brains of mice, is pivotal for brain stem cell longevity, according to a new study, a finding that has important impli…

Some shunts used after epilepsy surgery may risk brain shifting and chronic headaches

A new study associates some types of shunts used after epilepsy surgery with brains shifting toward the side of the skull.