Manipulating the intracellular environment of hippocampal slices: pH and high energy phosphates: TIM S. WHITTINGHAM, EDUARDO WARMAN, HUSSEIN ASSAF, THOMAS J. SICK∗ and JOSEPH C. LAMANNA Departments of Oral Biology, Biomedical Engineering, Neurosurgery, Physiology/Biophysics and Neurology, Case Western Reserve University, Schools of Dentistry and Medicine, Cleveland, OH, U.S.A., and ∗Department of Neurology, University of Miami School of Medicine, Miami, FL, U.S.A.