Biofilm Memory (IMAGE) University of California - San Diego Caption Memory imprints: Researchers used light exposure to impress a complex pattern (UC San Diego's former Geisel Library logo, spread across an area slightly smaller than the thickness of a human hair) onto a biofilm community--made up of hundreds of individual bacteria--that remembered the initial light stimulus, similar to how neurons form memory. Credit Suel Lab, UC San Diego Usage Restrictions Must be used in conjunction with UC San Diego paper on bacterial memory. 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.