The phrase "altering the underlying" is correct and usable in written English.
It can be used in contexts where you are discussing changes to fundamental aspects or foundations of a system, concept, or structure.
Example: "The researchers focused on altering the underlying assumptions of the theory to better fit the new data."
Alternatives: "modifying the foundation" or "changing the basis".
Overall, the Hallucination Machine offers a valuable new technique for simulating altered phenomenology without directly altering the underlying neurophysiology.
In other words, these reforms would simply remove ways of using the filibuster explicitly as a tactic to gum up the works by stalling legislation, without altering the underlying ability to block legislation with a minority of the Senate.
Despite the exponential growth in stream restoration projects and expenditures, there has been no evaluation to date of the efficacy of urban stream restoration projects in enhancing nitrogen retention or in altering the underlying ecosystem metabolism that controls instream nitrogen consumption.
Besides the influences from trans-acting factors and cis-acting regulatory elements, large number of DNA/histone-modifying enzymes also contribute to local gene activity (Kimura, 2013), both of which could recruit specified protein complexes to regulate transcription without altering the underlying genes sequences.
Nevertheless, looked at objectively it's difficult to say the young generation succeeded in fundamentally altering the underlying fabric of society.
In this paper, we introduce a novel method that uses gene pairs to improve the overall accuracy of the existing classification methods without altering the underlying algorithms.
They do not threaten to alter the underlying strategic transatlantic alliance.
The coalition has gone for the second and its failure to get many things (anything?) right does not alter the underlying argument.
It would be better to propose practical ways to alter the underlying situation, whereby the forces opposing this settlement are so dominant.
But that does not alter the underlying constitutional question whether the atmosphere of the community had been so saturated by adverse publicity as to deprive the state trial of the constitutional requirement of due process.
It was seen that AZ31 exhibited unusually high normalized strain-hardening rates compared to α-Ti that occurred beyond the strain levels where extension twins have completely altered the underlying texture.
