Benzocyclobutene (BCB) is being investigated as an insulating material for next-generation flexible neural recording probes. The probes are fabricated using microfabrication techniques to deposit multiple layers of BCB resin, metal traces, and aluminum masks. Electrodes and connection sites are defined using photolithography and reactive ion etching. This allows the probes to have flexible, biocompatible insulators and integrated signal processing to enable long-term, high-quality neuronal recordings in the brain. The current research is refining the fabrication process to make the BCB-based probes more robust.