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Central thalamus tunes the brain to different states of activity and arousal

Scientists showed that they could alter brain activity of rats and either wake them up or put them in an unconscious state by changing the firing rates of neurons in the central thalamus, a region known to regulate arousal.

18 Dec 2015

Salk researchers move one step closer to unlocking how the brain functions

How the brain functions is still a black box: scientists aren't even sure how many kinds of nerve cells exist in the brain. To know how the brain works, they need to know not only what types of nerve cells exist, but also how they work together. Researchers at the Salk Institute have gotten one step closer to unlocking this black box.

17 Dec 2015

Study sheds new light on the causes of autism

Evidence of autism may be found in the composition and malfunction of the brain's blood vessels, a team of scientists has found. Their research sheds new light on the causes of autism, which previously had pointed to neurological make-up rather than to the vascular system, and identifies a new target for potential therapeutic intervention.

17 Dec 2015

Clinical depression during early childhood can change the brain's anatomy

The brains of children who suffer clinical depression as preschoolers develop abnormally, compared with the brains of preschoolers unaffected by the disorder, according to new research at Washington University School of Medicine in St. Louis.

17 Dec 2015

Brain regions cause PTSD patients to generalize non-threatening events

Regions of the brain function differently among people with post-traumatic stress disorder, causing them to generalize non-threatening events as if they were the original trauma, according to new research from Duke Medicine and the Durham VA Medical Center.

16 Dec 2015

Innovative brain imaging study reveals why ToM deficiencies present in children with ASD

The holidays can be difficult for children with autism spectrum disorder (ASD), particularly because of new or different social situations. One reason scientists believe ASD causes impairment in social interactions is due to an inability to effectively infer other's thoughts and feelings through "theory of mind," or ToM -- the ability to understand the mental states of others and oneself.

16 Dec 2015

Researchers trace origins of early abnormal brain overgrowth in ASD

Further underscoring the prenatal origins of Autism Spectrum Disorder (ASD), researchers at University of California, San Diego School of Medicine describe for the first time how abnormal gene activity in cell cycle networks that are known to control brain cell production may underlie abnormal early brain growth in the disorder.

14 Dec 2015

Study offers insight into how female Viagra affects the brain

As the drug touted as "the female Viagra" comes to market, researchers at the University of Wisconsin-Madison are learning more about how the drug, called flibanserin, affects the brain.

13 Dec 2015

LSD reduces connectivity within human brain networks

LSD is known to cause changes in consciousness, including "ego-dissolution", or a loss of the sense of self. Despite a detailed knowledge of the action of LSD at specific serotonin receptors, it has not been understood how this these pharmacological effects can translate into such a profound effect on consciousness.

11 Dec 2015

Neuroscientists find link between neurotransmitter GABA and tactile learning

In an international collaboration with the Johns Hopkins University (Baltimore, MD, USA), neuroscientists at the Ruhr-University Bochum have determined a link between brain levels of the neurotransmitter GABA, the main source of inhibition in the brain, and tactile learning. Using magnetic resonance spectroscopy, they were able to show that success in learning can be predicted by baseline GABA levels.

11 Dec 2015

Specific deep-brain circuit's firing frequency can alter forebrain activity, alertness levels

Adjusting a specific deep-brain circuit's firing frequency immediately and dramatically alters rats' forebrain activity and alertness levels, Stanford University School of Medicine investigators have shown.

11 Dec 2015

Shank3 gene linked to both autism and schizophrenia

Although it is known that psychiatric disorders have a strong genetic component, untangling the web of genes contributing to each disease is a daunting task. Scientists have found hundreds of genes that are mutated in patients with disorders such as autism, but each patient usually has only a handful of these variations.

10 Dec 2015

Researchers identify brain processes in mice that shape different sensory perceptions

Scientists have long known that when sounds are faint or objects are seen through fog in the distance, repetition of these weak or ambiguous sensory “inputs” can result in different perceptions inside the same brain.

10 Dec 2015

Biotypes can identify distinct subgroups of psychosis

Three biomarker-based categories, called biotypes, outperformed traditional diagnoses, such as schizophrenia and bipolar disorder with psychosis, in sorting psychosis cases into distinct subgroups on the basis of brain biology, report researchers funded by the National Institutes of Health.

9 Dec 2015

Study provides new insights into relationship between taste, behavior

Evolutionary conserved brainstem circuits are the first relay for gustatory information in the vertebrate brain. While the brainstem circuits act as our life support system and they mediate vital taste related behaviors, the principles of gustatory computations in these circuits are poorly understood.

8 Dec 2015

Food smells activate impulse areas of the brain linked with obsessive-compulsive disorder in obese children

The area of the brain associated with impulsivity and the development of obsessive-compulsive disorder is activated in obese children when introduced to food smells, according to a study being presented next week at the annual meeting of the Radiological Society of North America.

24 Nov 2015

Brain imaging reveals distinctive aspects of high-inflammation depression

About one third of people with depression have high levels of inflammation markers in their blood. New research indicates that persistent inflammation affects the brain in ways that are connected with stubborn symptoms of depression, such as anhedonia, the inability to experience pleasure.

21 Nov 2015

Exercise can impact cortical thickness in older adults with mild cognitive impairment

Older adults that improved their fitness through a moderate intensity exercise program increased the thickness of their brain's cortex, the outer layer of the brain that typically atrophies with Alzheimer's disease, according to a new study from the University of Maryland School of Public Health.

20 Nov 2015

Brains of ASD individuals adapt to visual patterns during implicit learning

Carnegie Mellon University scientists have discovered a crucial difference in the way learning occurs in the brains of adults with autism spectrum disorder (ASD).

19 Nov 2015

UF Health investigators make new discovery about Huntington's disease

University of Florida Health researchers have made a new discovery about Huntington's disease, showing that the gene that causes the fatal disorder makes an unexpected "cocktail" of mutant proteins that accumulate in the brain.

19 Nov 2015