I'm not afraid of them, but it annoys me if them talk so much that I can't hear my thoughts. In those cases it becomes impossible for me to add anything in the conversation... and I will leave the first chance I get.
This is a common misunderstanding and since I've started to understand the root cause of it I've been able to adjust, however I do sometimes wonder why it's always me that has to do the adjusting and wouldn't mind if people made a little effort to meet half way...
What it is, is that the E thinks the reason the I isn't talking is because they're nervous or don't feel at ease, or that nobody's said anything that's triggered the I's interest. So what the E might be doing is trying their damnedest to a) assure the I that they're welcome and that their contributions are valued and b) keep saying different stuff in the hopes the I will find
something of interest and respond.
The E doesn't know it, but he's making the I feel bombarded and like you describe nolla. But the I doesn't realise that by retreating further and further they're making the E feel like nothing they can do or say is of any interest, that they're seen as contemptible and not worth their time. Without realising it, the I is making the E feel very frustrated and even hurt, because as far as the E is concerned, if someone has something to say then why don't they just say it? And if they don't have anything to say and just don't feel like talking, why not just say that also? Why sit there and let me blabber on, boring you to death??
It can seem to me like the number of 'requirements' for an introvert to actually speak, the circumstances that they seem to need in which they feel willing to share, open up or just participate at all, seems to sometimes be so specific and almost diva-like, a list of demands that are hard for the E to fulfill or even identify, and if we don't manage to get everything right for them then they just write us off and leave.