From left to right, from top to bottom: when we move our eyes, small deviations can occur even in such simple tasks. A research team led by Professor Peter Thier and Marc Junker at the Hertie Institute for Clinical Brain Research and the Werner Reichardt Center for Integrative Neurosciences (CIN) at the University of Tübingen now report brain signals that point to these errors. They are sent out by nerve cells in the cerebellum, just before we repeat an eye movement. The signal allows us to adapt the movement and to learn. With the study, the researchers clarify the function of the so-called climbing fiber signal, which was previously controversial. The results have been published in the current issue of the journal PLOS Biology.

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