Leopard Frog (IMAGE) University of Utah Caption University of Utah researchers used leopard frogs like the one shown here to measure tiny voltages from single brain cells and learn how those cells learn to detect short sounds. Distinguishing short sounds from longer sounds is essential for humans to understand each other's speech and for animals to recognize each other's calls. Credit Lee J. Siegel, University of Utah 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.