pAAV-hSyn-DA3h is an adeno-associated virus (AAV) plasmid designed for neuronal gene expression. It features the human synapsin (hSyn) promoter, ensuring specific expression in neurons. The plasmid carries DA3h, a target gene for functional studies, and includes AAV inverted terminal repeats (ITRs) for efficient packaging into viral vectors. This plasmid is commonly used in neuroscience research for gene delivery, optogenetics, or circuit mapping in the central nervous system.