The phrase "activity is triggered by" is correct and usable in written English.
It can be used to describe a situation where a specific action or event initiates another action or event.
Example: "The activity is triggered by the user's input, which prompts the system to respond accordingly."
Alternatives: "activity is initiated by" or "activity is caused by".
Cdk5 activity is triggered by its activator p35 [ 20].
In turn, Cas13 enzymes function as RNA-guided ribonucleases whose non-specific activity is triggered by target RNA binding.
During experience: the brain activity is triggered by an unpleasant taste; during observation: by the sight of disgusted facial expression; and during imagination: by vivid mental imagery triggered by written scripts.
PKA activity is triggered by G protein-coupled receptors in response to numerous neurotransmitters and hormones, and is mediated by increasing intracellular cAMP levels through the modulation of adenylyl cyclase (AC) activity [1].
However, further analyses suggested that ligand binding is insufficient for signaling, therefore the authors concluded the receptor activity is triggered by specific conformational rearrangements that occur during a specific phase of the transport cycle (Popova et al., 2010).
This study demonstrates that V-cycle activity is triggered by several abiotic stressors even when they occur in an absolute absence of light, leading to a decrease in Fv/Fm.
Yukutake et al. (2013) suggested that the seismic activity was triggered by the dynamic and static stress changes generated by the 2011 Tohoku-oki earthquake.
The discussion above suggests that the cluster activity was triggered by a decrease in the shear strength on the fault planes.
A hypothesis that the cluster activity was triggered by fluid, probably associated with a slow slip for the first hour, was put forward to explain both the migration of hypocenters and small stress drops of the cluster activity.
This hypothesis is also supported by the fact that earthquakes before and after the cluster activity had similar values of stress drop, thus suggesting that the activity was triggered by a different mechanism from the other earthquakes in the same region.
Seizure-like activity was triggered by each stimulus pulse but was also present when stimulation was turned off.
