Quantcast

Latest Cellular neuroscience Stories

2009-09-16 14:01:50

Technique targeting light-gated channels to enigmatic neurons proves role in burst swimming A new way to select and switch on one cell type in an organism using light has helped answer a long-standing question about the function of one class of enigmatic nerve cells in the spinal cord. Through targeted insertion of light-sensitive switches into these cells in awake zebrafish larvae, University of California, Berkeley, and UC San Francisco scientists have found that these mysterious cells...

2009-09-15 08:46:09

Dendrites integrate thousands of inputs locally before sending signals to central axon A tiny neuron is a very complicated structure. Its complex network of dendrites, axons and synapses is constantly dealing with information, deciding whether or not to send a nerve impulse, to drive a certain action. It turns out that neurons, at one level, operate like another complicated structure -- the United States, particularly its system of electing a president, through the Electoral College. A new...

2009-09-15 08:08:33

U.S. scientists say a new study of neurons supports one of several competing models that attempt to explain how neurons integrate synaptic inputs. Northwestern University researchers in Evanston, Ill., say a neuron is a very complex structure, with dendrites integrating thousands of inputs before it sends a signal to a central axon. Synapses constantly deal with information, deciding whether to send a nerve impulse to drive a certain action. The Northwestern scientists say their study...

609641cb8155cb6a7c08b80fe3863408
2009-09-07 09:53:13

Fifty years after it was originally discovered, scientists at the Friedrich Miescher Institute for Biomedical Research have elucidated the function of a microscopic network of tubules found in neurons. This structure modulates the strength of connections between two neurons, thereby contributing to our ability to learn and to adapt to new situations. For neurobiologist Thomas Oertner of the Friedrich Miescher Institute for Biomedical Research, which is part of the Novartis Research...

2009-09-03 15:29:30

As part of the intricate ballet of synaptic transmission from one neuron to the next, tiny vesicles "“ bubbles containing the chemical neurotransmitters that make information exchange possible"”travel to the tip of neurons (synapses), where they fuse with the cell's membrane (a process called exocytosis). The extra membrane is then captured in a process called endocytosis and recycled to form a new vesicle to enable the next cycle of release. Most important, exocytosis must be...

2009-09-02 14:21:59

U.S. scientists say they have discovered rats engage in a mental re-enactment of their recent experiences when choosing what actions to take. Massachusetts Institute of Technology researchers said they recorded the activity of single neurons called place cells in a brain structure -- the hippocampus -- that has been shown to be crucial for learning and memory. They found place cells are activated in a unique pattern and sequence for each specific location in a maze. When examining the brain...

2009-07-13 10:30:00

In the brain, many types of synaptic proteins are spatio-temporally regulated to maintain synaptic activity at a constant level. Here, the Japanese research group led by Professor Masaki Fukata, Drs. Yuko Fukata and Jun Noritake in National Institute for Physiological Sciences, Japan, found that two types of palmitoylating enzymes finely-tune the location and function of a major synaptic protein, PSD-95, in different ways. They also found that this mechanism contributes to keeping synaptic...

2009-06-22 15:35:10

U.S. scientists have determined a protein called neuroligin, implicated in some forms of autism, is critical to the construction of a working synapse. University of California-Davis researchers said they not only discovered neuroligin locks neurons together like molecular Velcro, but they obtained images that are the first to show two neurons coming together, using neuroligin to construct a new synapse. Previous research has suggested that neuroligin is critical for the formation and...

0f142c29a16d5e57ca337ca1460b22501
2009-06-18 15:07:49

The ability to learn and to establish new memories is essential to our daily existence and identity; enabling us to navigate through the world. A new study by researchers at the Montreal Neurological Institute and Hospital (The Neuro), McGill University and University of California, Los Angeles has captured an image for the first time of a mechanism, specifically protein translation, which underlies long-term memory formation. The finding provides the first visual evidence that when a new...

a41cddb90c44837a4d635bf8e7642b7a1
2009-06-18 07:35:00

A protein called neuroligin that is implicated in some forms of autism is critical to the construction of a working synapse, locking neurons together like "molecular Velcro," a study lead by a team of UC Davis researchers has found. Published online in the June issue of the journal Neural Development, the study is accompanied by groundbreaking images that are the first to show two neurons coming together using neuroligin to construct a new synapse. "Previous research has suggested that...


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