The phrase "weak stimulus" is correct and usable in written English.
It is typically used to describe something that elicits a limited response or reaction, either from a person or the environment. For example, "Although the teacher gave what she thought was a strong lecture, some of the students responded weakly to her weak stimulus."
A weak stimulus together with caution on other fronts, including mortgage relief, led to a weak economy in 2010.
A weak stimulus, or one with little intrinsic biological significance, will show relatively rapid habituation and little or no initial sensitization.
I see the following scenario: a weak stimulus plan, perhaps even weaker than what we're talking about now, is crafted to win those extra GOP votes.
And yes, it's quite possible that even aside from the political-economy angle, the weak stimulus directly made our long-run debt position worse.
The drive by Congressional Republicans to end the Obama administration's sensible (and still too weak) stimulus policies might help cut the trade deficit — but only by tipping the economy back into recession.
I'm not sure that lets his advisers completely off the hook; there's a big difference between saying, well, the macroeconomic case says this should be bigger, but smaller is OK, and saying — as they should have, and maybe some did — that a weak stimulus runs a large risk of setting us on a path toward a lost decade.
However the tinnitus sensation is usually of low intensity and of high frequency, and it is unknown if cortical responses can be measured with such "weak" stimulus properties.
For mechanical signals, noise serves to boost weak stimuli.
Kandel showed that weak stimuli give rise to certain chemical changes in synapses; these changes are the basis for short-term memory, which lasts minutes to hours.
It turns out that there is a big difference in the responses to weak stimuli, compared to those triggered by stronger stimuli.
Manifestations of this active process are high sensitivity and frequency selectivity with respect to weak stimuli, nonlinear compression of stimuli with larger amplitudes, and spontaneous otoacoustic emissions [1].
