Quantcast

Latest Action potential Stories

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...

2009-08-27 14:10:00

A team of Brown University scientists has pinpointed why carbon nanotubes tend to block a critical signaling pathway in neurons. It's not the tubes, the team finds, but the metal catalysts used to form the tubes. The discovery means carbon nanotubes without metal catalysts may be useful in treating human neurological disorders. Results appear in Biomaterials.Carbon nanotubes hold many exciting possibilities, some of them in the realm of the human nervous system. Recent research has shown that...

ad4f2ad82aa29f58ec559a543262cdad
2009-08-06 10:35:00

A new advanced method for nano-scale imaging of vesicle-fusion "“ vesicles are biological nano-sized containers - could add to our understanding of diseases of the nervous system and viral infections. In the long term, this could be useful in developing a cure for neurological diseases and mental disorders (e.g. schizophrenia, depression, Parkinson's disease, Alzheimer's disease). Researchers from the Department of Neuroscience and Pharmacology and the Nano-Science Center at the...

2009-07-07 15:26:41

Scientists at the Swedish medical university Karolinska Institutet and Linköping University are well on the way to creating the first artificial nerve cell that can communicate specifically with nerve cells in the body using neurotransmitters. The technology has been published in an article in Nature Materials.The methods that are currently used to stimulate nerve signals in the nervous system are based on electrical stimulation. Examples of this are cochlear implants, which are...

d668595dc8106c6347cd559bf33d8c131
2009-05-16 10:10:00

NSF Graduate Research Fellow Carl Schoonover presents his take on some of the intangibles of a complex method that measures neural activityCarl Schoonover is an NSF Graduate Research Fellow and a neuroscience doctoral candidate at Columbia University, where he studies the physiology and anatomy of neurons in the rodent brain. He is a member of the Columbia Neuroscience Writing Group (neuwrite.org) and his book, "Mind in Sight," will appear in Fall 2010.Schoonover is interested in how neuronal...

2009-03-18 08:28:20

UCLA researchers find that genes determine brain's processing speedThey say a picture tells a thousand stories, but can it also tell how smart you are? Actually, say UCLA researchers, it can.In a study published in the Journal of Neuroscience Feb. 18, UCLA neurology professor Paul Thompson and colleagues used a new type of brain-imaging scanner to show that intelligence is strongly influenced by the quality of the brain's axons, or wiring that sends signals throughout the brain. The faster...

afe5d39f36b6e8245456f0ec5270d8ad1
2009-03-10 07:30:13

Using ion-selective micro-electrodes electrical signals in plants moving from leaf to leaf could be measured. The speed of the signals spreading as voltage changes over cell membranes ranged from 5 to 10 cm per minute. The scientists discovered this new kind of electrical signal transmission system by applying a novel method: Filamentary electrodes were inserted through open stomata directly into the inner leaf tissue and then placed onto the cell walls (see picture). Stomata are...

2009-02-03 17:03:02

A delay in traffic may cause a headache, but a delay in the nervous system can cause much more. University of Missouri researchers have uncovered clues identifying which proteins are involved in the development of the nervous system and found that the proteins previously thought to play a significant role, in fact, do not. Understanding how the nervous system develops will give researchers a better understanding of neurological diseases, such as multiple sclerosis and Charcot-Marie-Tooth...

2009-01-30 07:00:00

BOSTON, Jan. 30 /PRNewswire/ -- Neurosilicon's novel Photoconductive Stimulation Device (PSD) was highlighted in the recent scientific publication by Hung and Colicos titled, Astrocytic Ca2+ Waves Guide CNS Growth Cones to Remote Regions of Neuronal Activity. The article appearing in the November 2008 issue of The Public Library of Science One journal focuses on the role of neuronal activity in mediating axonal guidance. It is known that the path axons follow is important in defining neuronal...

2009-01-28 10:21:48

Scientists have already hooked brains directly to computers by means of metal electrodes, in the hope of both measuring what goes on inside the brain and eventually healing conditions such as blindness or epilepsy. In the future, the interface between brain and artificial system might be based on nerve cells grown for that purpose. In research that was recently featured on the cover of Nature Physics, Prof. Elisha Moses of the Physics of Complex Systems Department and his former research...


Word of the Day
lambent
  • Licking.
  • Hence Running along or over a surface, as if in the act of licking; flowing over or along; lapping or bathing; softly bright; gleaming.
This word comes the Latin 'lambere,' to lick.
Related