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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
it is stimulus
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "it is stimulus" is not correct in standard English usage.
The correct form would be "it is a stimulus" or "it is stimuli" depending on the context. Example: "In this experiment, it is a stimulus that triggers the response in the subjects."
⚠ May contain grammatical issues
Science
News & Media
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
4 human-written examples
Some of it is stimulus spending.
News & Media
Last year that was waste, this year it is stimulus spending to save the world.
News & Media
S-nitrosylation meets the criteria for validation as a cell signaling mechanism: it is stimulus evoked (12, 13), precisely targeted (14), reversible (15), spatiotemporally restricted (16, 17), and necessary for specific cell responses (18).
Science
Assuming that neuronal responses can be described by Poisson statistics, we compute the log likelihood of s for the population response r i as following: log L (s ) = ∑ i = 1 N log [ f i (s ) r i r i ! e x p (− f i (s ) ) ] = ∑ i = 1 N log (f i (s ) ) r i − ∑ i = 1 N f i (s ) − ∑ i = 1 N log (r i ! ) We can ignore the last term as it is stimulus s independent.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
That could mean that the middle occipital gyrus (MOG) response is short-lived or that it is stimulus-bound and only occurs when a stimulus is visible on the screen (which was for the first 200 ms).
Science
"We have to be careful about what medicines we throw at this, whether it's stimulus packages or a bailout," said Liz Ann Sonders, chief investment strategist at Charles Schwab & Company.
News & Media
So it's stimulus, response.
News & Media
Since this effect is stimulus based, it must be due to some acoustical difference between the categories of stimuli.
The "it" is the economic stimulus package the new Congress intends to send to the new president, Barack Obama, in January.
News & Media
The major one being the model can only be as good as the stimulus since it is the stimulus that drives the expression of fos protein.
And on the stimulus part, we can't get people in the White House to say it is a stimulus -- $50 billion for roads and other infrastructure, but they avoid the word "stimulus" like the plague.
News & Media
Expert writing Tips
Best practice
When intending to use the term "stimulus", ensure you use the correct article. Use "a stimulus" when referring to a single instance, and "stimuli" when referring to multiple instances.
Common error
Avoid omitting the article "a" or "an" before "stimulus" when referring to a single stimulus. Saying "it is stimulus" is grammatically incorrect. Instead, say "it is a stimulus".
Source & Trust
80%
Authority and reliability
2.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it is stimulus" functions as an incorrect declarative statement. Ludwig AI flags this as grammatically incorrect, because the noun "stimulus" requires an article (a/an) when used in the singular form. The correct form is "it is a stimulus".
Frequent in
Science
50%
News & Media
50%
Formal & Business
0%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "it is stimulus" is grammatically incorrect and infrequent. Ludwig AI identifies the need for an article before "stimulus", making "it is a stimulus" the correct form when referring to a single instance. While sources like The New York Times and Huffington Post use the phrase, its incorrectness impacts its expert rating and suitability for formal contexts. To avoid errors, remember to include "a" or "an" before singular nouns like stimulus, and use "stimuli" for plural instances. Alternative phrases such as "it is an incentive" or "it is a motivation" may also be appropriate, depending on context.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
it is a stimulus
Adding the article "a" makes the phrase grammatically correct and refers to a single instance of stimulus.
it is an incentive
Replaces "stimulus" with "incentive", providing a similar meaning but with different connotations of motivation.
it is a motivation
Substitutes "stimulus" with "motivation", focusing on the internal drive aspect.
it serves as a stimulus
Restructures the sentence to emphasize the role of 'it' as something that causes a reaction.
it acts as a catalyst
Uses "catalyst" to highlight the accelerating effect of 'it' on a process.
it is a trigger
Replaces stimulus with "trigger" which implies something that initiates a process.
it is an impetus
Uses "impetus" to emphasize the driving force behind an action or process.
it is the driving force
Emphasizes 'it' as the primary factor that propels something forward.
it is a spark
Metaphorically describes 'it' as something that ignites or initiates a reaction.
it is a source of stimulation
Changes the structure to focus on the origin of the stimulation.
FAQs
What's the correct way to say "it is stimulus"?
The grammatically correct way to express this is "it is a stimulus" when referring to a single instance, or "it is stimuli" for multiple instances. Alternatively, you could use "it is incentive", depending on the context.
Can I use "it is stimulus" in academic writing?
No, "it is stimulus" is grammatically incorrect and unsuitable for academic writing. Use "it is a stimulus" or "it is stimuli" instead. Proofread carefully to avoid such errors.
What words can I use instead of stimulus?
Depending on the context, you can use words like "motivation", "incentive", "catalyst", or "trigger". Ensure the chosen word accurately reflects the intended meaning.
How does "it is a stimulus" differ from "it is stimuli"?
"It is a stimulus" refers to a single instance or cause, while "it is stimuli" refers to multiple instances or causes. The choice depends on whether you are discussing one specific stimulus or several stimuli.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
80%
Authority and reliability
2.5/5
Expert rating
Real-world application tested