While researching a topic, a student has taken the following notes:

* Neuroscientists Krishnan Padmanabhan and Zhen Chen sought to better understand the workings of the brain's olfactory system.
* They devised a study using mathematical models.
* They found that certain fibers allow the brain to toggle from one method of processing smells to another.
* In one method, cells in the piriform cortex (where the perception of odor forms) capture olfactory information at a given moment.
* In the other, the cells track changes in olfactory information over time.

The student wants to summarize the study's findings. Which choice most effectively uses relevant information from the notes to accomplish this goal?