1 23 The Journal of Physiological Sciences ISSN 1880-6546 Volume 69 Number 2 J Physiol Sci (2019) 69:409-419 DOI 10.1007/s12576-019-00660-1 Different doses of methamphetamine alter long-term potentiation, level of BDNF and neuronal apoptosis in the hippocampus of reinstated rats Siamak Shahidi, Alireza Komaki, Reihaneh Sadeghian & Sara Soleimani Asl