function I = axon_current ( t )

%*****************************************************************************80
%
%% axon_current() evaluates the time dependent current I(t) of the axon ODE.
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    13 March 2021
%
%  Author:
%
%    John Burkardt
%
%  Input:
%
%    real T: the time.
%
%  Output:
%
%    real I: the current.
%
  I = 75.0 * ( t <= 0.80 );

  return
end

