The phrase "a brief increase" is correct and usable in written English.
It can be used to describe a short or temporary rise in something, such as prices, temperatures, or levels.
Example: "There was a brief increase in sales during the holiday season, but they returned to normal afterward."
Alternatives: "a short rise" or "a temporary increase".
In the wake of the firing of the Daily Mirror and Sunday Mirror editors, there was a brief increase in Trinity Mirror's share price.
For instance, Florida, which has almost doubled its prison population over the past 15 years, has experienced a smaller drop in crime than New York, which, after a brief increase, has reduced its number of inmates to below the 1993 level.
But the White House, which approves of the plan's overall goals, made an important concession on Wednesday by agreeing to consider a brief increase in the debt ceiling if all parties showed some willingness to compromise on a longer-term plan structured like that of the Gang of Six.
Climate studies suggest that Cambrian temperatures were the norm for most of the Phanerozoic Eon (the last 541 million years), and these were exceeded only by a brief increase during the Permian Period (298.9 million to 252.2 million years ago) near the end of the Paleozoic Era.
Two studies, one on HBOC and the other on HNPCC, reported a brief increase in depression at 2 weeks posttest in carriers.30,35 Also, one study on HNPCC reported decreased depression scores at 1 month,44 whereas another found scores to be lower at 4 months.25 There were no differences in depression scores between groups for HBOC, HNPCC, or AD at any time point beyond 2 weeks.
Two studies reported a brief increase in intracranial pressure after administration of ketamine but no evidence of sustained changes in intracranial pressure or cerebral perfusion pressure.
In most cases Vulcanian explosive events at Tungurahua were preceded by a marked brief increase in LP seismic events—a swarm typically occurs a few days to several hours prior to the eruption.
This apparent paradox can be justified considering the levels of expression of IL-6, its spatial and temporal interaction with the target tissue, and the length of time in which the circulating IL-6 is actually elevated, that is, a chronic response versus a somewhat brief increase that returns to baseline [ 33].
There is an initial very brief increase in flow, followed by a period of reduced flow lasting several minutes in normal kidneys.
The sound pressure signature is dominated by a large amplitude pulse associated with an explosive, but brief increase in the rate of heat transfer at the start of the vortex wall interaction.
At this point you might say "Ah, but these are excitatory synapses, and each one produces only a relatively small perturbation of membrane conductance that lasts a short time (a brief conductance increase will have a localized effect because only the charge in the near vicinity of the conductance increase will have time to leak through it).
