Neocortex News and Research

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Molecular mechanisms of NR2B regulates age-related memory storage, brain aging

The N-methyl-D-aspartic acid (NMDA) receptor dysfunction in the brain of aged animals has been shown. In older rodents, N-methyl-D-aspartate receptor 2B subunit gene expression declines significantly associated with memory impairment.

6 Dec 2013

Prenatal alcohol exposure impacts brain development and change behavior

Prenatal exposure to alcohol severely disrupts major features of brain development that potentially lead to increased anxiety and poor motor function, conditions typical in humans with Fetal Alcohol Spectrum Disorders, according to neuroscientists at the University of California, Riverside.

3 Dec 2013

Connectivity, size of brain can predict degree of anxiety in young children

Prolonged stress and anxiety during childhood is a risk factor for developing anxiety disorders and depression later in life. Now, Stanford University School of Medicine researchers have shown that by measuring the size and connectivity of a part of the brain associated with processing emotion - the amygdala - they can predict the degree of anxiety a young child is experiencing in daily life.

20 Nov 2013

Scientists uncover faulty brain mechanism that may underlie schizophrenia in humans

Working with mice genetically engineered to display symptoms of schizophrenia, neuroscientists at the RIKEN-MIT Center for Neural Circuit Genetics at the Picower Institute for Learning and Memory at MIT have uncovered a faulty brain mechanism that may underlie schizophrenia and other psychiatric disorders in humans.

17 Oct 2013

TSRI scientists decode important molecular signal that guides development of neocortex

Scientists at The Scripps Research Institute have decoded an important molecular signal that guides the development of a key region of the brain known as the neocortex. The largest and most recently evolved region of the brain, the neocortex is particularly well developed in humans and is responsible for sensory processing, long-term memory, reasoning, complex muscle actions, consciousness and other functions.

8 Aug 2013

Scientists identify important molecular signal that guides development of brain

Scientists at The Scripps Research Institute (TSRI) have decoded an important molecular signal that guides the development of a key region of the brain known as the neocortex.

8 Aug 2013

TSRI neuroscientists fill in significant gap in the understanding of how neurons mature

Neuroscientists at The Scripps Research Institute have filled in a significant gap in the scientific understanding of how neurons mature, pointing to a better understanding of some developmental brain disorders.

21 Jun 2013

Optogenetics: A promising technique for treatment of obsessive-compulsive disorders

By applying light stimulation to highly specific neurons in the brain, the researchers managed to re-establish normal behaviour in mice that had beforehand presented pathological repetitive behaviour similar to that observed in human patients suffering from obsessive-compulsive disorders.

10 Jun 2013

Findings could lead to better understanding of learning and memory

Students preparing for final exams might want to wait before pulling an all-night cram session - at least as far as their neurons are concerned. Carnegie Mellon University neuroscientists have discovered a new intermediate phase in neuronal development during which repeated exposure to a stimulus shrinks synapses.

30 May 2013

Study compares gene expression levels in two key hippocampal regions affected by Alzheimer's

Researchers from the Computational Intelligence Group based at the Universidad Politécnica de Madrid's Facultad de Informática have used machine learning and data mining techniques to compare gene expresssion levels in Alzheimer's disease (AD) patients in two key regions of the hippocampus: the dentate gyrus, where the disease appears to have little or no effect, and the entorhinal cortex, where Alzheimer's disease produces major neuronal damage.

10 Oct 2012

Study provides direct evidence for persistent activity in medial entorhinal cortex layer neurons

UCLA researchers have for the first time measured the activity of a brain region known to be involved in learning, memory and Alzheimer's disease during sleep. They discovered that this part of the brain behaves as if it's remembering something, even under anesthesia, a finding that counters conventional theories about memory consolidation during sleep.

8 Oct 2012

Study reveals key difference in brain development between human and chimpanzee

Research comparing brain development in humans and our closest nonhuman primate relatives, chimpanzees, reveals how quickly myelin in the cerebral cortex grows, shedding light on the evolution of human cognitive development and the vulnerability of humans to psychiatric disorders, a GW professor finds.

26 Sep 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

Abnormal tau protein propagates along linked brain circuits

For decades, researchers have debated whether Alzheimer's disease starts independently in vulnerable brain regions at different times, or if it begins in one region and then spreads to neuroanatomically connected areas. A new study by Columbia University Medical Center (CUMC) researchers strongly supports the latter, demonstrating that abnormal tau protein, a key feature of the neurofibrillary tangles seen in the brains of those with Alzheimer's, propagates along linked brain circuits, "jumping" from neuron to neuron.

2 Feb 2012

Different brain structures control eye reflexes in the course of life

Structures in the midbrain that developed early in evolution can be responsible for functions in newborns which in adults are taken over by the cerebral cortex. New evidence for this theory has been found in the visual system of monkeys by a team of researchers from the RUB. The scientists studied a reflex that stabilizes the image of a moving scene on the retina to prevent blur, the so-termed optokinetic nystagmus.

1 Dec 2011

Insight into how brain organizes during development

Scientists at the Allen Institute for Brain Science have taken an important step in identifying how the brain organizes itself during development. The findings, published in the Journal of Comparative Neurology today, describe - in more detail than ever before - the consequences of the loss of a key molecule involved in establishing proper brain architecture during brain development.

3 Aug 2011

Leukemia protein plays a role in Alzheimer's disease

After decades of studying the pathological process that wipes out large volumes of memory, scientists at The Feinstein Institute for Medical Research discovered a molecule called c-Abl that has a known role in leukemia also has a hand in Alzheimer's disease.

25 May 2011

Brain enzyme can restore even old, fading memories, say researchers

Even long after it is formed, a memory in rats can be enhanced or erased by increasing or decreasing the activity of a brain enzyme, say researchers supported, in part, by the National Institutes of Health.

4 Mar 2011

Scientists discover axons can send signals to cell body

Neurons are complicated, but the basic functional concept is that synapses transmit electrical signals to the dendrites and cell body, and axons carry signals away.

18 Feb 2011

Study unveils surprising mechanism that controls brain formation

A study from The Scripps Research Institute has unveiled a surprising mechanism that controls brain formation. The findings have implications for understanding a host of diseases, including some forms of mental retardation, epilepsy, schizophrenia, and autism.

10 Feb 2011