A hyper-detailed 3D render of a sci-fi baroque brain device, intricately merging anatomical accuracy with a terrarium ecosystem under a transparent dome. The design incorporates steampunk aesthetics with brass gears, copper piping, and exposed clockwork mechanisms intricately woven throughout. Scientific instruments and glowing filaments pulse with energy, creating a photorealistic effect. Subtle bioluminescent flora and tiny robotic critters inhabit the terrarium, adding vibrant life. The overall design blends organic shapes with mechanical precision, showcasing a fusion of nature and technology, set against a backdrop of swirling nebula-like patterns.