Groundbreaking technology for the transmission of acoustic signals, designed for use in fully implantable hearing aids, has been successfully tested for the first time. The technology is based on completely contact-free fibre-optic technology, which senses the tiniest ossicle movements and uses them to stimulate the acoustic nerves. A joint Austrian-Serbian team including Karl Landsteiner University of Health Sciences, Austria, has now successfully tested this new innovation. The tests produced important findings on future use of the technology on humans. The results were published in the international journal Biosensors and Bioelectronics.