In many aspects, the invention relates to systems and methods for
providing memory therapy by modulating neural firing rhythms, in
particular in Alzheimer's patients. The stimulation of neurons is
controlled through a feedback process whereby neuron firing rhythms are
altered based on naturally occurring electrical and chemical activity in
the brain. Neurons in the nucleus basalis and dentate gyrus may be
targeted in order to establish neural signaling pathways and establish
communication between these regions.