I think you might enjoy "In Search of Memory" by Nobel Laureate Eric Kandel (pdf linked below). He provides an entertaining and informative narrative documenting the history of neuroscience (a history Kandel himself heavily influenced). Kandel also wrote 'Principles of Neural Science', a 1400 page tome that some regard as the neuroscience bible. If you are more interested in the latest happenings, run a google scholar search for articles by Huganir, R.Nicoll, or R.Malinow (Malinow had an interesting paper recently called 'Engineering a Memory'). Or if you are interested in neuro methods look up whats been done in the Karl Deisseroth lab.

http://evolbiol.ru/docs/docs/large_files/kandel.pdf