![In-the-ear EEG devices.](https://neuro247.compute.dtu.dk/wp-content/uploads/2015/04/In-the-ear-EEG-devices-300x220.jpg)
In-the-ear EEG devices designed in Aarhus in the group of Preben Kidmose.
Some time ago we (three DTU researchers) got in-the-ear EEG devices from the Preben Kidmose group in Aarhus. These devices are made via casting to fit the individual ears. Tiny electrodes wired to a small plug are fitted on the plastic shell. There is a hole in the shell, so sounds from the environment travels through to the ear drum.