Fig. 3 (IMAGE) Osaka University Caption Acquisition of associative memory through Hebbian learning on the 3D polymer wiring system, indicating successful associations between colors and corresponding fruits. Credit 2023 Naruki Hagiwara et al., Advanced Functional Materials Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.