Session I. Electrochemistry of the ISM and Ionophores for the ISM.- Theory of Ion-Selective Electrodes.- New Ion Selective Liquid Membrane Microelectrodes.- Sensitivity of K+-Selective Microelectrodes to pH and Some Biologically Active Substances.- Double-Barrel Ion Selective [K+, Ca2+, Cl?] Coaxial Microelectrodes ISCM for Measurements of Small and Rapid Changes in Ion Activities.- Determination of Selectivity Coefficients of Ion-Selective Microelectrodes.- Session II. Intracellular Measurements of Ionic Activity.- Intracellular Potassium and Chloride Measurements in Sheep Cardiac Purkinje Fibers.- Intracellular Electrochemical Potentials: Skeletal Muscle vs. Epithelial Steady-State vs. Kinetics.- Measurement of Intracellular Calcium Activities.- pH Related Potassium Movements in Rabbit Atrium.- Intracellular Free Calcium Affects Electric Membrane Properties. A Study with Calcium-Selective Microelectrodes and with Arsenazo III in Helix Neurons.- Measurements of Free Ca2+ in Nerve Cell Bodies.- Intracellular Recording of Potassium in Neurons of the Motor Cortex of Awake Cats Following Extracellular Applications of Acetylcholine.- Potassium Fluxes of Isolated Nerve Endings Monitored by a Valinomycin-Activated Ion-Selective Membrane electrode in vitr..- Session III. Ion Activities in the Spinal Cord and Their Physiological Significance.- Extracellular K+ Accumulation in the Spinal Cord.- Extracellular Potassium and Calcium Activities in the Mammalian Spinal Cord, and the Effect of Changing Ion Levels on Mammalian Neural Tissues.- Relations Between Extracellular K+ and Ca++ activities and Local Field Potentials in the Spinal Cord of the Rat during Focal and Generalized Seizure Discharges.- Ion Fluxes Across the Membrane of Motoneurons during the Action of Glutamate.- The Ionic Basis of the IPSP in Spinal Motoneurones of the Frog.- Effects of Increased Extracellular Potassium Activity in the Frog Spinal Cord on the Flexor Reflex.- Extracellular K+ Activity During Electrical Stimulation of Rat Sympathetic Ganglia, Vagus and Optic Nerves in vitr..- Extracellular Potassium Activity and Axon Excitability.- Session IV. Ionic Activity Changes in the Brain and their Physiological Significance.- Extracellular Potassium, Calcium and Volume Profiles During Spreading Depression.- Cortical pH and pCa in Relation to DC Potential Shifts During Spreading Depression and Asphyxiation.- Changes of Extracellular Potassium in Rat Cerebellar Cortex Indicate a Reduced Na-K-Pump Activity During Acute and Chronic Li-Application.- Changes in Extracellular Free Ca2+ in the Sensorimotor Cortex of Cats During Electrical Stimulation and Iontophoretic Application of Amino-Acids.- Measurements of Ion Activity in the CNS: Extracellular K+ and Ca in the Hippocampus.- Evoked Ionic Alterations in Brain Slices.- Serotonin and GABA-Induced Fluctuations in Extracellular Ion Concentration in the Hippocampal Slice.- The Slow Component of the Direct Cortical Response and Extracellular Potassium.- Potassium Changes Elicited in the Feline Somatosensory Cortex by a Single Stimulus to the Peripheral Nerve.- The Mechanism and Integrative Role of Extracellular Potassium Clearance in the Rat Brain.- Session V. Ionic Activity Changes in the Heart and Skeletal Muscle.- K+ Accumulation and its Physiological Regulatory Effects in Heart Muscle.- Measurement of Intracellular Ionic Calcium Concentration in Guinea Pig Papillary Muscle.- Intracellular Na Activity During K or Rb Activated Response in Sheep Purkinje Fibres. Correlation with Changes in Membrane Potential.- Interaction between pHi, and pCai, in Cardiac Tissue.- The Use of ISMs in Working Skeletal Muscle and Venous Effluent Blood.- Characteristics of Ca2+-Selective Microelectrodes and Their Application to Cardiac Muscle Cells.- Session VI. Other Techniques for the Study of Ionic Activity Changes in Brain Research.- Ion-Selective Properties of the Nerve Cell Membrane.- Glial Cells as Potassium Detectors.- The Role of Cells in the Dispersal of Brain Extracellular Potassium.- Movement of Potassium into Glial Cells in the Retina of the Drone, Apis Mellifera, During Photostimulation.- Intracellular Calcium and the Regulation of Neuronal Membrane Permeability.- CNS and Na-Pump in in sit. Muscle.- Participants.
