http://revach.net/article.php?id=5079

Section: Tefila   Category: Tefila
Parshas Naso: Rav Bentzion Bruk - A Mind Blowing Amein

The Mishna says in Brachos that the Chazan should not say Amein after Birchas Kohanim because he will become disoriented. The SHaarei Tefila beings that Rav Bentzion Bruk asked the question we all wondered about, why will answering Amein confuse the Chazan?

He answers that we see from here what Amein really is. It is not just a chant at the end of a bracha. In order for Amein to bring the bracha it must be said with such deep kavana that it will make you become disoriented when you land back in your place.