Zarifkar, Asadollah, 1.Department of Neuroscience, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran 2.Department of Physiology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran 3.Shiraz Neuroscience Research Center, Shiraz University of Medical Sciences, Shiraz, Iran, Iran, Islamic Republic of