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Latest Neocortex Stories

gamma rhythm
2014-08-25 03:30:14

David Orenstein, Brown University In a new study researchers show that they could make faint sensations more vivid by triggering a brain rhythm that appears to shift sensory attention. The study in mice, reported in Nature Neuroscience, provides the first direct evidence that the brain’s “gamma” rhythms have a causal role in processing the sense of touch. By striking up the right rhythm in the right brain region at the right time, Brown University neuroscientists report that they...

Brain Activity During Slow-Wave-Sleep Differs Between Mammals And Birds
2014-03-05 10:40:23

Max Planck Institute When we drift into deep slow-wave sleep (SWS), waves of neuronal activity wash across our neocortex. Birds also engage in SWS, but they lack this particular brain structure. Researchers from the Max Planck Institute for Ornithology in Seewiesen, Germany together with colleagues from the Netherlands and Australia have gained deeper insight into the sleeping avian brain. They found complex 3D plumes of brain activity propagating through the brain that clearly differed...

2013-08-08 14:09:03

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. 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. "The mammalian neocortex has a distinctive structure featuring six layers...

The Sleeping Brain Behaves As If It's Remembering Something
2012-10-08 07:17:17

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. The research team simultaneously measured the activity of single neurons from multiple parts of the brain involved in memory formation....

Bird Brains Help In Study Of The Mammalian Neocortex
2012-10-02 11:02:13

April Flowers for redOrbit.com - Your Universe Online Humans and other mammals have a seemingly unique part of the brain called the neocortex, which is a layered structure on the outer surface where higher-order processing is thought to occur. A new study from the University of Chicago found similar cells in the brains of birds, but in a vastly different anatomical structure. Confirming a 50-year hypothesis about the identity of a mysterious structure in the bird brain, the new study...

2012-06-01 11:28:36

Changes to just three genetic letters among billions led to evolution and development of the mammalian motor sensory network, and laid the groundwork for the defining characteristics of the human brain, Yale University researchers report. This networks provides the direct synaptic connections between the multi-layered neocortex in the human brain responsible for emotions, perception, and cognition and the neural centers of the brain that make fine motor skills possible. A description of...

2012-04-04 20:28:09

Primitive consciousness emerges first as you awaken from 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...

2011-12-01 01:06:47

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. They...

Study: More Facebook Friends Means Bigger Brain Regions
2011-10-19 10:05:33

New research has found that people with more Facebook friends tend to have bigger brain regions than those with fewer friends, suggesting that using online social networks could be changing our brains. The researchers at University College London (UCL) found that users with the greatest number of friends on the social network had more gray matter in brain regions linked to social skills. The neuroscientists say the finding could mean that either social networking changes these brain...

2011-03-23 20:41:03

A new study is providing fascinating insight into how projections conveying sensory information in the brain are guided to their appropriate targets in different species. The research, published by Cell Press in the March 24 issue of the journal Neuron, reveals a surprising new evolutionary scenario that may help to explain how subtle changes in the migration of "guidepost" neurons underlie major differences in brain connectivity between mammals and nonmammalian vertebrates. The neocortex...


Word of the Day
ramage
  • Boughs or branches.
  • Warbling of birds in trees.
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