Simplify the following text for a Grade 13 native English-speaking person.
Original: Modern neuroscience education and research activities can be very roughly categorized into the following major branches , based on the subject and scale of the system in examination as well as distinct experimental or curricular approaches .
Simplified: Current neuroscience research activities can be very roughly divided into the following major branches , based on what they study and at what scale they study , as well as what experimental approaches they use .