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Variabilität bei nichtinvasiv gemessenen schnellen Hirnströmen

The brain processes information using both slow and fast currents. Until now, researchers had to use electrodes placed inside the brain in order to measure the latter. For the first time, researchers from Charité – Universitätsmedizin Berlin and the Physikalisch-Technische Bundesanstalt (PTB), Berlin Institute, successfully visualized these fast brain signals from the outside – and found a surprising degree of variability. According to their article in PNAS*, the researchers used a particularly sensitive magnetoencephalography device to accomplish this feat.

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In einer neuen behördenübergreifenden Arbeitsgemeinschaft „Advanced Materials“ soll unter der Leitung des Bundesinstituts für Risikobewertung (BfR) ein Expertengremium, darunter auch PTB-Experten, mögliche Gesundheits- und Umweltrisiken von „Advanced Materials“ bewerten. Es soll den zukünftigen Umgang mit den fortschrittlichen Werkstoffen, zu denen auch neue Nanomaterialien zählen, regulatorisch und im Sinne der Risikofrüherkennung beleuchten. Die PTB fokussiert sich dabei auf messtechnische Fragestellungen bei der zuverlässigen Charakterisierung der neuartigen Materialien. (Ansprechpartner: Harald Bosse, 0531 592-5010, Opens local program for sending emailharald.bosse(at)ptb.de)

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A brief introduction to PTB

Entrance of PTB Braunschweig

Here in a nutshell are a few Opens internal link in current windowFacts about PTB, or read the current facts and figures from the Opens internal link in current windowAnnual Report. If you want more details, here you will find a Opens internal link in current windowDescription of Tasks of PTB. Furthermore, we recommend our general Info Sheet about PTB which you can download in the right-hand column as a pdf file.

Important research topics

The SI with its 7 base units
In the new International System of Units (SI), seven fundamental constants are determined as defining reference values. (Diagram: PTB)

We present you with an overview of PTB's diverse research landscape as well as some especially highlighted topics in the chapter l Opens internal link in current windowResearch & Development, including the key strategic points in European metrology research (Opens internal link in current windowChallenges and Prospects) as well as the various success stories surrounding Opens internal link in current windowPTB's Technology Transfer. How firmly PTB is integrated in the international research landscape you can see briefly, on the one hand, in the Opens internal link in current windowOverview and, on the other hand, we individually present the respective research institutes of the worldwide metrology landscape in the chapter Opens internal link in current windowInternational Affairs.


Evaluation report (in Geman only)
Stand: Januar 2012

In 2002, PTB as a whole was evaluated – with an excellent outcome. In 2008, an evaluation of PTB research followed, carried out by the Wissenschaftsrat (German Council of Science and Humanities) with a subsequent Implementation Report in 2012. You will find more about this at Opens internal link in current windowPTB in the World of Research or in the pdfs of the evaluation reports which you can download in the right-hand column.

The next evaluation will follow in 2016.