Conducting polymers such as polyaniline (PANI), polypyrrole (PPy), and poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) are versatile materials across bioelectronic applications. They have gained significant attention for their relative softness compared with inorganic materials, ability to transport both electronic and ionic charges, and ease of fabrication via solution processing. Particularly, their deployment as scaffolds and hydrogels has enabled unique interpenetration and integration with biological systems, through the formation of electrically-conductive materials with properties typically only achievable in insulating polymers.