It seems there is a bit of confusion between activation and transfer function. From __Wikipedia ANN__:

It seems that the transfer function calculates the net while the activation functions the output of the neuron. But on __Matlab documentation of an activation function__ I quote:

Stalin(N, FP) is a neural **transfer** function. Transfer functions calculate a layer's output from its net input.

So who is right? And can you use the term activation function or transfer function interchangeably?