"gut response" is correct and usable in written English.
You can use this phrase when you want to describe a reaction that you have to something without thinking too much about it - a reaction that is instinctive or instinct-based. For example: "The first time I heard her speech, I was moved to tears - it was a gut response."
And the gut response for consumers is: "Big deal".
Such brain activity indicates a kind of gut response, operating below the level of conscious control.
When I first read your question, I had an immediate gut response: Burn the diary.
But watching this feature, my gut response was that there was a degree of truth in what the old man was saying.
That captures the instinctive gut response of the party, though the argument was opposed by not just the CBI but also the Institute of Directors on Tuesday.
The gut response was to marvel at the artistic imagination and its execution, but to feel that it was the concept, rather than the clothes, that inspired awe.
Twitter, which gives quick voice to the American cultural id, was the venue for a flood of mocking and gleeful gut responses.
It could have been a truly revealing moment wherein those listeners could scrutinize their immediate reactions and have a chance to exchange and articulate their "gut" responses.
They were propagandists, and Pudovkin's emotive editing gets inside you to produce gut responses at odds with any scepticism you might feel about his melodramas of revolution.
Babies possess certain moral foundations — the capacity and willingness to judge the actions of others, some sense of justice, gut responses to altruism and nastiness.
The party changed many of its attitudes over the next couple of decades, but its gut responses to migrants and ethnic minorities didn't change substantially until we were close to the end of the Thatcher era.
