CEF meaningfully alleviated the SAH-induced cognitive deficits in spatial learning memory and reference memory.  CEF administered rats showed a reduction of hippocampal neuronal apoptosis following SAH.  CEF treated animals also reversed the downregulation of EAAT2 expression expressively following SAH.  CEF also enhanced the nuclear translocation of p65 and the activation of Akt in hippocampal astrocytes. Here, AKT1 is linked to Cognitive impairment.