Key source of memories (IMAGE) University of Freiburg Caption In the top-most layer of neocortex, memory-related information is relayed by synapses from the thalamus (orange), which are in turn controlled by local 'gatekeeper' neurons (blue). Credit Source: M. Belén Pardi Usage Restrictions The image may only be used with appropriate caption or credit. 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.