DLG4 and Cognitive impairment: The above researches showed that acupuncture at ST36, GV20, GV21, GV22, GV24, BL17, BL20 and BL23 can increase the expression of proteins that maintain synaptic structures (PSD-95), enhance the levels of LTP, regulate the release of neurotransmitters/neuropeptides, enhance synaptic plasticity, and improve cognitive impairment after stroke.