<prompt> Conduction in which type of nerve fibres is blocked maximally by pressureC fibresA- alpha fibresA - BetaA- gamma  <response>: The velocity of conduction through a nerve fiber is directly proportional to the thickness of the axon.Thickest and fastest is A fibers. Among A fibers, the thickest is Aα. Hence the maximum affected by pressure will be Aα. 