UT theoretical chemistry code forum

Thank you for your answer.
So, you mean that 'Ea = Ef + Eb', right?
, where Ea = activation energy
Ef = formation energy
Eb = migration energy barrier

Hello.
I wanna calculate the activation energy.
Recently, I studied the activation energy was not equal to energy barrier.
The activation energy indicates the sum of the formation energy and migration energy barrier.
If that is true, which one does NEB calculate the activation energy or migration ...