An electrode array (10) is configured for implantation into a subject. The electrode array (10) includes an organic substrate material (12) configured to be implanted into an in vivo environment and to optionally dissolve after implantation into the in vivo environment and be absorbed by the in vivo environment, and an electrode (14) mounted to the organic substrate material (12) and configured to acquire signals generated by the in vivo environment. The electrode array (10) includes a connection pad (20) mounted to the organic substrate (12), and a conductive trace (16) formed between the electrode (14) and the connection pad (2). The conductive trace (16) includes a conductive ink that is MRI-compatible.
