MRI study analyzes stress-processing brain regions in older city dwellers.
A new study published in the Journal of Psychopharmacology, conducted by researchers from the University of Liverpool, Maastricht University and King's College London, shows that bilingual speakers' ability to speak a second language is improved after they have consumed a low dose of alcohol.
One of the two brain-training methods most scientists use in research is significantly better in improving memory and attention. It also results in more significant changes in brain activity.
Half a century of research on how the brain learns to integrate visual inputs from the two eyes has provided important insights in critical period regulation, leading to the conclusion that it occurs within the cortex. The Levelt group now made the surprising discovery that a brain region that passes on input from the eyes to the cortex also plays a crucial role in opening the critical period of binocular vision.
HRL Laboratories, LLC, researchers have determined how non-invasive transcranial direct current stimulation (tDCS) could increase associative learning. When applied to the prefrontal cortex, tDCS affected the brain widely, changing functional connectivity between areas, and accelerating learning in macaques. This confirmation potentially resolves controversy over reports claiming no effect on neuron firing rates in cadaver heads, believed to be the mechanism of interest. The HRL study confirmed faster learning regardless of neuron firing rates.
For the first time, researchers have identified neural signatures of explicit and implicit learning.
A recent study finds that users have trouble utilizing images from unmanned aerial systems (UASs), or drones, to find the position of objects on the ground. The finding highlights challenges facing the use of UAS technology for emergency operations and other applications, while offering guidance for future technology and training development.
Cannabidiol, a non-intoxicating derivative from cannabis, has been shown to reduce seizures and autism-like behaviors in a mouse model of a genetic disorder, Dravet syndrome. Children with this devastating condition have difficult-to-treat epilepsy, cognitive impairments, and problems with social interactions. The researchers also studied how therapeutic effects of cannabidiol relate to changes in signaling between certain brain neurons.
New research has contributed to solving a paradox of perception, literally upending models of how the brain constructs interpretations of the outside world. When observing a scene, the brain first processes details -- spots, lines and simple shapes -- and uses that information to build internal representations of more complex objects, like cars and people. But during recall, the brain remembers those larger concepts first. This could shed light on concepts such as eyewitness testimony to autism.
For the first time, Whitehead Institute scientists have documented a direct link between deletions in two genes--fam57ba and doc2a--in zebrafish and certain brain and body traits, such as seizures, hyperactivity, large head size, and increased fat content. Both genes reside in the 16p11.2 region of the genome, which has been linked to multiple brain and body disorders in humans, including autism spectrum disorder, developmental delays, seizures, and obesity.