alphm.m

利用Matlab模拟细胞HH 模型中的所有参数变化和动态Action Potential 生成过程

function am = alphm(V)

% ALPHM(V) - HH alpha function for m variable. Note this is vectorized.

    am = zeros(size(V));
    indx = find(abs(V+35)<0.001);
    if isempty(indx)==0
        am(indx) = 1./(1-(V(indx)+35)/20);
        indx = find(abs(V+35)>=0.001);
        if isempty(indx)==0
            am(indx) = 0.1*(V(indx)+35)./(1-exp(-(V(indx)+35)/10));
        end
    else
        am = 0.1*(V+35)./(1-exp(-(V+35)/10));
    end
return

%	if abs(V+35) > 0.001
%		am = 0.1*(V+35)/(1-exp(-(V+35)/10));
%	else
%		am = 1/(1-(V+35)/20);
%	end
%return