Rat Brain Cells Taught to Fly Jet Plane
It sounds like science fiction: a brain nurtured in a Petri dish learns to pilot a fighter plane as scientists develop a new breed of “living” computer. But in groundbreaking experiments in a Florida laboratory that is exactly what is happening.
The “brain”, grown from 25,000 neural cells extracted from a single rat embryo, has been taught to fly an F-22 jet simulator by scientists at the University of Florida.
They hope their research into neural computation will help them develop sophisticated hybrid computers, with a thinking biological component.
One target is to install living computers in unmanned aircraft so they can be deployed on missions too dangerous for humans. It is also hoped that the research will provide the basis for developing new drugs to treat brain diseases such as epilepsy.
The brain-in-a-dish is the idea of Thomas DeMarse, 37, an assistant professor of biomedical engineering at the University of Florida. His work has been praised as a significant insight into the brain by leading US academics and scientific journals.
The 25,000 neurons were suspended in a specialised liquid to keep them alive and then laid across a grid of 60 electrodes in a small glass dish.
Under the microscope they looked at first like grains of sand, but soon the cells begin to connect to form what scientists are calling a “live computation device” (a brain). The electrodes measure and stimulate neural activity in the network, allowing researchers to study how the brain processes, transforms and stores information.
In the most striking experiment, the brain was linked to the jet simulator. Manipulated by the electrodes and a desktop computer, it was taught to control the flight path, even in mock hurricane-strength winds.
Source: The Age.
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