Illustration of synapses (IMAGE) Salk Institute Caption Normally, the different parts of the synaptic complex grow and shrink together. The researchers find evidence that this process can go awry in aging and this may contribute to cognitive impairment. Credit Salk Institute Usage Restrictions With credit and related coverage 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.