What is the simple predicate of this sentence Signals come from brain during sleep?

The simple predicate of the sentence "Signals come from brain during sleep" is come.

Here's why:

* Predicate: The predicate is the part of the sentence that tells us what the subject does or is.

* Simple Predicate: The simple predicate is the verb or verb phrase that expresses the action or state of being of the subject.

In this sentence, the subject is "Signals," and the verb "come" tells us what the signals do.