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Fellows Directory

Roger Thomas

Credit: Professor Roger Thomas

Professor Roger Thomas FRS


Elected: 1989


Roger Thomas is internationally recognised for his pioneering work on the development of ion-sensitive microelectrodes. He invented the recessed tip electrode, allowing tip diameters of less than 1 micrometre and so permitting the use of these electrodes in a wider range of cells.

He has used these microelectrode techniques to characterise the electrogenic sodium pump in neurons and has become an authority on intracellular pH and calcium regulation in large snail nerve cells. His methods have now largely been superseded by optical techniques and fluorescent indicators. His own experiments involve recording many variables simultaneously from single cells.

Professional positions

Emeritus Professor of Physiology, Department of Physiology, Development and Neuroscience, University of Cambridge

Interests and expertise

Subject groups