The phrase "an extra impulse" is correct and usable in written English.
It can be used when referring to an additional motivation or stimulus that encourages action or change.
Example: "To achieve our goals, we need an extra impulse to drive our efforts forward."
Alternatives: "a additional motivation" or "a supplementary push".
What propels that language, and gives it such a certain dramatic shape, is often an extra- musical impulse.
In fact, the relative amplitude error in the displacement response due to the discontinuity at the end of the impulse can be reliably estimated by the ratio of the area of extra impulse over the area of input impulse, where the area of extra impulse is equal to a half of the product of the time step and load discontinuity.
And this spring, the team isolated a mutation on a different gene that may cause seizure activity in the brain to direct extra impulses through the vagus nerve to the heart, making it slow and, in some cases, stop beating.
The myocardial cells die, and stop conducting the extra impulses that caused your rapid heartbeat.
The economic crisis in 2008 gave an extra impulse to the trend, with reduced energy consumption leading to lower bills.
If anything I would say that it might be the other way around, that the US election might exert an extra inhibition on any impulse to take military action in the Middle East right now.
Little things -- a daily cup of coffee, an extra tank of gas, or an impulse purchase of a great pair of shoes -- quickly add up to be big budget sabotagers.
Note that the imaginary part, I g l, m, g l 0, m 0, is not equal to zero but constitutes an extra interference after propagation through the channel with complex impulse response.
Mattingly, the Dodgers' manager, resisted the impulse to move Kemp from third in the lineup to leadoff to perhaps give him an extra plate appearance so he might improve his numbers.
