Some cognitive neuroscientists study brain lesions to learn more about brain functions. however, a major problem with this technique is that

Explanation:

There are seven challenges for neuroscience:

BY THE DEFINITION/FROM A SOURCE:

Challenge 1. Change the way neuroscience is done.

Challenge 2. Data ladders.

Challenge 3. Predictive neuroscience.

Challenge 4. Simulating the brain.

Challenge 5. Classifying and simulating diseases of the brain.

Challenge 6. From the brain to brain-inspired technology.

Challenge 7. Working with society

Those are the challenges they have, and they each represent a different problem.

Brain lesions:

Nausea, vomiting, personality changes, headaches...

answer:

it could come from a variety of sources.

explanation:

..although it was most likely developed through zoonotic transmission, where an infectious disease which usually afflicts when animals jump to humans.