What's the plural form of neuroactivity? Here's the word you're looking for.
Answer
The noun neuroactivity can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be neuroactivity.
However, in more specific contexts, the plural form can also be neuroactivities e.g. in reference to various types of neuroactivities
or a collection of neuroactivities.