Cortex News and Research

RSS

Aristolochic acid exposure leads to kidney failure and UUC

Aristolochic acid (AA), a component of a plant used in herbal remedies since ancient times, leads to kidney failure and upper urinary tract cancer (UUC) in individuals exposed to the toxin.

10 Apr 2012

Scientists image process of consciousness after general anesthesia

Awakening from anesthesia is often associated with an initial phase of delirious struggle before the full restoration of awareness and orientation to one's surroundings. Scientists now know why this may occur: primitive consciousness emerges first. Using brain imaging techniques in healthy volunteers, a team of scientists led by Adjunct Professor Harry Scheinin, M.D. from the University of Turku, Turku, Finland in collaboration with investigators from the University of California, Irvine, USA, have now imaged the process of returning consciousness after general anesthesia.

5 Apr 2012

Altered activity at different sites within brain network may be related to different features of depression

Depressed individuals with a tendency to ruminate on negative thoughts, i.e. to repeatedly think about particular negative thoughts or memories, show different patterns of brain network activation compared to healthy individuals, report scientists of a new study in Biological Psychiatry.

4 Apr 2012

Brains of people with anorexia and obesity are wired differently

The brains of people with anorexia and obesity are wired differently, according to new research. Neuroscientists for the first time have found that how our brains respond to food differs across a spectrum of eating behaviors - from extreme overeating to food deprivation.

4 Apr 2012

Study examines how fluctuations in brain activity can impact dynamics of cognitive tasks

A team of University of Pittsburgh mathematicians is using computational models to better understand how the structure of neural variability relates to such functions as short-term memory and decision making. In a paper published online April 2 in Proceedings of the National Academy of Sciences (PNAS), the Pitt team examines how fluctuations in brain activity can impact the dynamics of cognitive tasks.

3 Apr 2012

Non-invasive brain stimulation cuts time to improve speech in stroke patients

One of the most frustrating challenges for some stroke patients can be the inability to find and speak words even if they know what they want to say. Speech therapy is laborious and can take months. New research is seeking to cut that time significantly, with the help of non-invasive brain stimulation.

2 Apr 2012

Brain images show nerves ‘crisscrossing’ in neat but complex patterns: Study

New images of the brain reveal a deceptively simple pattern of organization in the wiring of this complex organ. Instead of nerve fibers travelling randomly through the brain like spaghetti, as some imaging has suggested, the new portraits reveal two-dimensional sheets of parallel fibers ‘crisscrossing’ other sheets at right angles in a grid-like structure that folds and contorts with the convolutions of the brain. This same pattern appeared in the brains of humans, rhesus monkeys, owl monkeys, marmosets and galagos, researchers report Thursday in the journal Science.

1 Apr 2012

Cortex reports net income of $832,000 for fourth quarter 2011

Cortex Pharmaceuticals, Inc. reported net income of approximately $832,000, or $0.01 per share, for the quarter ended December 31, 2011, compared with a net loss of approximately $984,000, or $0.01 per share, for the corresponding prior year quarter.

31 Mar 2012

Scientists produce first genetic brain atlas

The first atlas of the surface of the human brain based upon genetic information has been produced by a national team of scientists, led by researchers at the University of California, San Diego School of Medicine and the VA San Diego Healthcare System.

30 Mar 2012

Simple placebo pill can track footprints of prior antidepressant use

Individuals with major depressive disorder (MDD) often undergo multiple courses of antidepressant treatment during their lives. This is because the disorder can recur despite treatment and because finding the right medication for a specific individual can take time.

27 Mar 2012

Study identifies abnormal brain gene expression patterns in autism

A study led by Eric Courchesne, PhD, director of the Autism Center of Excellence at the University of California, San Diego School of Medicine has, for the first time, identified in young autism patients genetic mechanisms involved in abnormal early brain development and overgrowth that occurs in the disorder. The findings suggest novel genetic and molecular targets that could lead to discoveries of new prevention strategies and treatment for the disorder.

23 Mar 2012

Electroconvulsive therapy and how it works in severe depression: Study

Electroconvulsive therapy, or ECT, has been used in severely and persistently depressed patients from their disabling mood state for more than seven decades. Researchers have searched for the reason why this technique sometimes works in these patients.

20 Mar 2012

Infants' faces evoke species-specific patterns of brain activity in adults

Distinct patterns of activity-which may indicate a predisposition to care for infants-- appear in the brains of adults who view an image of an infant face-even when the child is not theirs, according to a study by researchers at the National Institutes of Health and in Germany, Italy, and Japan.

17 Mar 2012

Combination therapy may improve life span and motor function of infants with Batten disease

Infants with Batten disease, a rare but fatal neurological disorder, appear healthy at birth. But within a few short years, the illness takes a heavy toll, leaving children blind, speechless and paralyzed. Most die by age 5.

16 Mar 2012

Exposure to radiation from cell phones during pregnancy affects brain development of offspring

Exposure to radiation from cell phones during pregnancy affects the brain development of offspring, potentially leading to hyperactivity, Yale School of Medicine researchers have determined.

16 Mar 2012

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