Conceptual visualization of a neural network brain storing data streams, incorporating holographic overlays with AI-inspired symbolism, in a futuristic composition with layered depths. Neural network textures intertwine and form complex patterns, while glitch effects add an abstract dimension to the overall aesthetic. The holographic data overlays overlay the brain's surface, displaying intricate systems of information exchange. Symbolic abstractions float throughout the scene, representing the abstract concepts being processed by the neural network.