Jonathan Felix Ashmore FRS FMedSci FRSB (born 1948)[8] is a British physicist and Bernard Katz Professor of Biophysics at University College London.

[5] After a short postdoctoral research fellowship supervised by Abdus Salam[6] at the International Centre for Theoretical Physics in Trieste, Italy he retrained as a physiologist at UCL, gaining a Master of Science degree in 1974[9] which led to work with Paul Fatt and Gertrude Falk[12] between 1974 and 1977 in the Biophysics Department.

[16][17][18] In response to sound, outer hair cells lengthen then shorten through a process controlled and powered by the flow of electrically charged molecules such as potassium ions.

[10][16] His work has combined biophysical methods – including the patch clamp technique usually applied to membrane proteins – with confocal microscopy imaging and computational modelling to expand our knowledge of hearing at the molecular and cellular level.

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