Neurons communicate via spikes but how they use those short pulses to code information is still an open question.
Recent work at the Max Planck Institute for Brain Research (Theory of Neural Dynamics Group) reveals that by determining temporal pairwise correlations one can get closer to answering this question.
A key to understanding how the brain works is revealing the set of rules neurons use to communicate information between one another. The main means of neural communication are spikes, which are brief electrical pulses send out at some specific times.
A spike train generated by a neuron can be considered a long binary pattern where “1” denotes a spike and “0” its absence. How much information about the input can be recovered by observing spike trains which look for example like 00010100…?
How many combinations of 0’s and 1’s should be studied to “decode” the input message of a neuron? Especially the latter question is not trivial because nearly infinitely many combinations of 0’s and 1’s are possible.
Tatjana Tchumatchenko and her team now present a theoretical approach showing that only a limited number of binary patters is required and that correlations between pairs of spikes (between the time points of two “1”s) are key to solve the code in single neurons.
Their findings have been published in Nature Communications.
Dr. Arjan Vink | Max-Planck-Institut für Hirnforschung
Scientists uncover the role of a protein in production & survival of myelin-forming cells
19.07.2018 | Advanced Science Research Center, GC/CUNY
NYSCF researchers develop novel bioengineering technique for personalized bone grafts
18.07.2018 | New York Stem Cell Foundation
A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.
The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
20.07.2018 | Power and Electrical Engineering
20.07.2018 | Information Technology
20.07.2018 | Materials Sciences