I read this novel in the mid or late 1990s, I think.
The protagonist is a young person (girl?) who lives in a dome/arc city. Everyone there is telepathic. There is a high degree of conformity expected, everyone is assigned a specialized job, dresses in uniforms, etc. (It really contains basically every dystopian arc trope you can think of...)
At one point she is put into a sort of 'solitary confinement'/sensory deprivation chamber where she is telepathically cut off from the rest of the people. Most citizens consider this a horrible punishment, but she finds it relaxing.
Because she is uniquely able to survive apart from the group(?) she is the first person to leave the city and see what the post-some-kind-of-disaster earth is like.
I remember the name being related to dreamcatchers, but it is definitely not related to The Dreamcatcher by Steven King, or Under The Dome.