Hi Sunrise and welcome to Neurotalk.

To answer your question; there is an option where members can opt to be automatically notified via email when a new post is added to any thread to which they've contributed. Those who've chosen this option will be notified, othes won't.

The addition of your post to this thread has caused the thread to be bumped back to the top of the topics in the forum, so hopefully those not notified will see that you've re-opened the discussion.

I hope that helps.