Cortex News and Research

RSS

New research reveals dynamics behind signal transmission in brain

Surprising rate at which neuronal networks in the cerebral cortex delete sensory information. The dynamics behind signal transmission in the brain are extremely chaotic. This conclusion has been reached by scientists from the Max Planck Institute for Dynamics and Self-Organization at the University of Göttingen and the Bernstein Center for Computational Neuroscience Göttingen.

24 Jan 2011

Psychological Science journal releases new research findings

The insula has been implicated in evaluative and affective processes. New findings indicate that the insula may be broadly involved in integrating affective and cognitive processes. Participants rated the positivity and negativity of picture stimuli and how emotionally arousing they found the pictures to be.

24 Jan 2011

MGH research sheds light on mechanisms of action of mindfulness-based training

Participating in an 8-week mindfulness meditation program appears to make measurable changes in brain regions associated with memory, sense of self, empathy and stress. In a study that will appear in the January 30 issue of Psychiatry Research: Neuroimaging, a team led by Massachusetts General Hospital researchers report the results of their study, the first to document meditation-produced changes over time in the brain's grey matter.

24 Jan 2011

New research shows how humans readily learn to throw long distances

Can't help molding some snow into a ball and hurling it or tossing a stone as far into a lake as you can? New research from Indiana University and the University of Wyoming shows how humans, unlike any other species on Earth, readily learn to throw long distances. This research also suggests that this unique evolutionary trait is entangled with language development in a way critical to our very existence.

24 Jan 2011

New study unravels neural mechanisms underlying inability to express emotions

This German study demonstrates that the supragenual anterior cingulate cortex (ACC) is constantly activated more strongly in alexithymic subjects and that this activation is related to the symptoms of alexithymia and not to associated symptoms such as depression. These findings also support the hypothesis of an altered function of the ACC in alexithymia.

18 Jan 2011

Why minor details of an episode are linked to long-term memories

Neuroscientists at MIT's Picower Institute of Learning and Memory have uncovered why relatively minor details of an episode are sometimes inexplicably linked to long-term memories. The work is slated to appear in the Jan. 13 issue of Neuron.

14 Jan 2011

Brain cell destroying genetic mechanism responsible for development of AD

Researchers at the University of British Columbia and Vancouver Coastal Health Research Institute have discovered that the genetic mechanism which destroys brain cells is responsible for early development of Alzheimer's Disease in people with Down Syndrome and for development of Alzheimer's Disease in general population - providing a potential new target for drugs that could forestall dementia in people with either condition.

13 Jan 2011

UCLA imaging system could help reveal 'miscommunications' in autism, schizophrenia

Some disorders of the brain are obvious - the massive death of brain cells after a stroke, the explosion in the growth of cells that marks a tumor. Other disorders, such as autism, schizophrenia and mental retardation show no physical signs of damage and are believed to be caused by problems in how brain cells communicate with one another.

13 Jan 2011

Population of highly active neurons could provide insight into neocortex

Carnegie Mellon University researchers have found that within the brain's neocortex lies a subnetwork of highly active neurons that behave much like people in social networks.

11 Jan 2011

Babies' brains process language the same way as adults

Babies, even those too young to talk, can understand many of the words that adults are saying - and their brains process them in a grown-up way.

7 Jan 2011

Radiosurgery may bring improvement for patients with extremely severe -compulsive disorder

For patients with extremely severe -compulsive disorder (OCD), a procedure called radiosurgery may bring improvement when other treatments have failed, according to a study in the January issue of Neurosurgery, official journal of the Congress of Neurological Surgeons. The journal is published by Lippincott Williams & Wilkins, a part of Wolters Kluwer Health.

7 Jan 2011

Mutated TDP-43 can cause neurons to die: Study

Lou Gehrig's disease, or amyotrophic lateral sclerosis, and frontotemporal lobar degeneration are characterized by protein clumps in brain and spinal-cord cells that include an RNA-binding protein called TDP-43. This protein is the major building block of the lesions formed by these clumps.

6 Jan 2011

Study on aberrant cellular localization in the brain

Normally, cortical nerve cells or neurons reside in the brain's gray matter with only a few scattered neurons in the white matter, but some people with schizophrenia have a higher number of neurons in the white matter. Neuronal migration errors may arise in schizophrenia as a consequence of both genetic and environmental factors.

5 Jan 2011

Bupropion and varenicline help curb cigarette craving

The smoking cessation medications bupropion and varenicline may both be associated with changes in the way the brain reacts to smoking cues, making it easier for patients to resist cravings, according to two reports posted online today that will appear in the May print issue of Archives of General Psychiatry, one of the JAMA/Archives journals.

4 Jan 2011

General anaesthesia brings reversible coma and not sleep: Study

Anaesthesia has been one of the greatest gifts of science and use of general anaesthesia is a routine part of surgical operations at hospitals and medical facilities around the world. However precise biological mechanisms of the drugs’ effects on the brain are only now being analyzed. In a review article published this week in the New England Journal of Medicine, scientists have tried to analyze a range of disciplines, including neuroscience and sleep medicine to understand how anaesthesia actually works.

2 Jan 2011

Neuroscientists say that general anesthesia is a reversible coma

The brain under general anesthesia isn't "asleep" as surgery patients are often told -- it is placed into a state that is a reversible coma, according to three neuroscientists who have published an extensive review of general anesthesia, sleep and coma, in the Dec. 30 issue of The New England Journal of Medicine.

30 Dec 2010

Exposure to persistent organic pollutants alters cortisol level in blood

Karin E Zimmer's PhD research shows that persistent organic pollutants (POPs), such as PCB and mixtures of different POPs, affect the way the adrenal cortex functions and thereby the synthesis of the stress hormone cortisol.

28 Dec 2010

Brain regions that 'fire up' due to suppression of automatic behaviour

Research from York University is revealing which regions in the brain "fire up" when we suppress an automatic behaviour such as the urge to look at other people as we enter an elevator.

23 Dec 2010

New research sheds light on how neurons make connections with one another

Newly published research led by Professor Z. Josh Huang, Ph.D., of Cold Spring Harbor Laboratory sheds important new light on how neurons in the developing brain make connections with one another.

22 Dec 2010

Hyperpriming in early stages of Alzheimer's disease explained

The capacity to remember that a zebra has stripes, or that a giraffe is a four-legged mammal, is known as semantic memory. It allows us to assign meaning to words and to recall general knowledge and concepts that we have learned. The deterioration of these capacities is a defining feature of semantic dementia and can also occur in Alzheimer's disease.

20 Dec 2010