The Hearing Machinery of the Inner Ear (IMAGE) EMBO Caption Within the hair bundle, the sensory antenna of auditory sensory cells, the tip-link is a bridge-like structure that when stretched can activate the ion channel responsible for generating electrical signals from sound. Credit EMBO Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.