I want to know the answer to the following question:
The most common tools that neurophysiologists use are what?
All the background I'm provided with is that "Functional imaging techniques such as functional magnetic resonance imaging are also used to study brain activity; these techniques have mainly been used with human subjects, because they require a conscious subject to remain motionless for long periods of time, but they have the great advantage of being noninvasive.". Is that enough to answer the question?