Cortex News and Research

RSS

Scientists use novel system to discover sequential firing of neurons

Princeton University researchers have used a novel virtual reality and brain imaging system to detect a form of neural activity underlying how the brain forms short-term memories that are used in making decisions.

15 Mar 2012

Long-term meditators have larger amounts of gyrification

Earlier evidence out of UCLA suggested that meditating for years thickens the brain (in a good way) and strengthens the connections between brain cells. Now a further report by UCLA researchers suggests yet another benefit.

15 Mar 2012

Binge drinking linked to brain damage in teens and young adults

Every year, thousands of teens and young adults celebrate Spring Break by drinking large amounts of alcohol — binge drinking — a dangerous right-of-passage for some and one linked to possible brain damage later as adults, says an expert.

13 Mar 2012

Biologists identify how and where the brain processes FM sweeps

In both animals and humans, vocal signals used for communication contain a wide array of different sounds that are determined by the vibrational frequencies of vocal cords. For example, the pitch of someone's voice, and how it changes as they are speaking, depends on a complex series of varying frequencies. Knowing how the brain sorts out these different frequencies-which are called frequency-modulated (FM) sweeps-is believed to be essential to understanding many hearing-related behaviors, like speech.

9 Mar 2012

Scientists identify 2,000 important genes linked to singing

Can the song of a small bird provide valuable insights into human stuttering and speech-related disorders and conditions, including autism and stroke? New research by UCLA life scientists and colleagues provides reason for optimism.

8 Mar 2012

Loss of glutamate receptor linked to negative effects of chronic stress

Chronic stress has a more powerful effect on the brain during adolescence than in adulthood and now there's proof at the molecular level, according to findings published in Neuron by University at Buffalo researchers.

8 Mar 2012

Study uncovers neural mechanism that links repeated stress with impaired memory

Anyone who has ever been subject to chronic stress knows that it can take a toll on emotions and the ability to think clearly. Now, new research uncovers a neural mechanism that directly links repeated stress with impaired memory.

8 Mar 2012

March issue of NeuroPerspective reviews therapeutics for ADHD

NeuroPerspective, the independent, monthly review of the neurotherapeutics area, has released its March issue, which reviews the field of therapeutics for Attention Deficit Disorder.

8 Mar 2012

Study shows how new information is encoded into prefrontal cortex

The brain has a remarkable ability to learn new cognitive tasks while maintaining previously acquired knowledge about various functions necessary for everyday life. But exactly how new information is incorporated into brain systems that control cognitive functions has remained a mystery.

6 Mar 2012

Snoring toddlers may develop behavioural problems later: Study

A new study shows that babies and toddlers who snore, gasp for breath, or breathe with their mouth open while sleeping may be at a greater risk of behavioural problems all the way through second grade.

5 Mar 2012

Young children with SDB more likely to develop neurobehavioral problems

A study of more than 11,000 children followed for over six years has found that young children with sleep-disordered breathing are prone to developing behavioral difficulties such as hyperactivity and aggressiveness, as well as emotional symptoms and difficulty with peer relationships, according to researchers at Albert Einstein College of Medicine of Yeshiva University.

5 Mar 2012

Deficits in mirror neuron system contribute to social impairments in ASD

Impaired social function is a cardinal symptom of autism spectrum disorders (ASDs). One of the brain circuits that enable us to relate to other people is the "mirror neuron" system. This brain circuit is activated when we watch other people, and allows our brains to represent the actions of others, influencing our ability to learn new tasks and to understand the intentions and experiences of other people.

3 Mar 2012

Digital exercises improve brain function, behavior in people with schizophrenia

People with schizophrenia who completed 80 hours of intensive, computerized cognitive training exercises were better able to perform complex tasks that required them to distinguish their internal thoughts from reality.

1 Mar 2012

ACTB and ACTG1 actin genes cause Baraitser-Winter syndrome

Scientists from Seattle Children's Research Institute and the University of Washington, in collaboration with the Genomic Disorders Group Nijmegen in the Netherlands, have identified two new genes that cause Baraitser-Winter syndrome, a rare brain malformation that is characterized by droopy eyelids and intellectual disabilities.

1 Mar 2012

HDAC2 enzyme could be a potential target for new Alzheimer's drugs

MIT neuroscientists have shown that an enzyme overproduced in the brains of Alzheimer's patients creates a blockade that shuts off genes necessary to form new memories. Furthermore, by inhibiting that enzyme in mice, the researchers were able to reverse Alzheimer's symptoms.

1 Mar 2012

Mantra-based meditation shows promise against age-associated cognitive impairment

Researchers at Thomas Jefferson University Hospital determined that mantra-based meditation can have a positive impact on emotional responses to stress, fatigue and anxiety in adults with memory impairment and memory loss.

29 Feb 2012

Activating brain's visual cortex improves our sense of smell

A new study reveals for the first time that activating the brain's visual cortex with a small amount of electrical stimulation actually improves our sense of smell.

28 Feb 2012

People with depression have increased connections among most brain areas

Most of us know what it means when it's said that someone is depressed. But commonly, true clinical depression brings with it a number of other symptoms. These can include anxiety, poor attention and concentration, memory issues, and sleep disturbances.

27 Feb 2012

Major discovery for visual cognition using diffusion spectrum imaging

If you are looking for a particular object - say a yellow pencil - on a cluttered desk, how does your brain work to visually locate it?

22 Feb 2012

Researchers track structural changes during formation of new memories

New connections between brain cells emerge in clusters in the brain as animals learn to perform a new task, according to a study published in Nature on February 19 (advance online publication). Led by researchers at the University of California, Santa Cruz, the study reveals details of how brain circuits are rewired during the formation of new motor memories.

20 Feb 2012