About the motor nerves of the heart

Are there nerves whose irritation can cause the heart to contract again after it has stopped? Modern physiology does not have sufficient material to give a definite answer to this question, neither in the negative sense, nor, still less, in the positive sense. The most developed and substantiated is the view expressed by the head of the myogenic school Gaskell): such nerves do not exist, or at least we do not know a single fact that would speak for their existence.