Rapid Golgi analysis method for efficient and unbiased classification of dendritic spines.Dendritic spines are the primary recipients of excitatory synaptic input in the brain. 
Rapid Golgi analysis method
One of the most commonly used methods to visualize spines is Golgi-Cox staining, which is appealing both due to ease of sample preparation and wide applicability to multiple species including humans. 
Golgi-Cox staining