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Brain in a test tube

26.06.2019

Japanese scientists have for the first time grown cerebral organoids, also known as "brains in a test tube", with functional neural networks. These three-dimensional tissue cultures mimicking the human brain can be used as a model for drug testing or disorder research.

To create organoids, biologists have obtained "balls" of pluripotent stem cells that can transform into various tissues of the human body. The cells were placed in a bowl filled with a nutrient medium similar to that necessary for the development of the central nervous system. The scientists then assessed the activity of the neurons by looking for changes in the calcium ions in the cells, which are needed to generate an action potential.

The team was able to successfully visualize synchronized and unsynchronized activity in neural networks as well as individual neurons. Synchronized neural activity is essential for various brain functions, including memory.

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Random news from the Archive

green mouse 13.08.2002

This is the name of a pocket generator for recharging cell phone batteries, proposed by the French inventor Stefan Hugenin.

Outwardly, this device weighing 110 grams really resembles a computer mouse, but with the essential difference that it can and should be pulled by the tail. The handle protruding from the rear end of the "mouse" must be pulled several times, as when starting a boat motor. The generator located inside is untwisted, from which the phone is recharged.

At the front end of the device there is a white LED that lights up when a button is pressed, so that the "green mouse" also serves as a flashlight, the light of which is visible from a distance of up to a kilometer.

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