Editions:  Austria · Denmark · France · Germany · Italy · Norway · Spain · Sweden · Switzerland

Lausanne scientists in brain map breakthrough

Share this article

EPFL/YouTube Screenshot
22:40 CEST+02:00
Researchers in Switzerland said on Monday a new computerized model of part of a rat's cortex predicts connections between neurons, which could help explain how the brains of mammals -- including humans -- work.

"This is a major breakthrough because it would otherwise take decades, if not centuries, to map the location of each synapse in the brain," said Henry Markram, head of the Blue Brain Project at Switzerland's Ecole Polytechnique Federale de Lausanne.

Launched in 2005, the project aims to develop a virtual mammal brain by 2018.

One of the greatest challenges in neuroscience is to map the synaptic connections between neurons, the statement said, dubbing the so-called
"connectome" the "holy grail that will explain how information flows."

To reconstruct a rat's "virtual cortical microcircuit," the researchers used data about the geometrical and electrical properties of neurons compiled
over 20 years from experiments on slices of living brain tissue.

"Each neuron in the circuit was reconstructed into a 3D model on a powerful Blue Gene supercomputer," the statement said. "About 10,000 of virtual neurons were packed into a 3D space in random positions according to the density and ratio of morphological types found in corresponding living tissue."

According to the researchers, whose findings are published in this week's issue of the Proceedings of the National Academy of Sciences, the locations on the model matched that of synapses found in the equivalent real-brain circuit with 75 to 95 percent accuracy.

"Overall, this work represents a major acceleration in the ability to construct detailed models of the nervous system," according to the statement.

Get notified about breaking news on The Local

Share this article

From our sponsors

'How I landed my dream job working at an international NGO'

Two MBA graduates from EMLYON Business School explain how their studies helped them to land their dream jobs working for international organisations.