Regarding your question about dreams.
From Brainfacts.orgDuring non-REM sleep, the thalamus is inactive, but during REM sleep, when we are dreaming, the thalamus is active, sending the cerebral cortex images, sounds, and sensations, which is why we are able to hear, feel, and see in our dreams similarly to how we do when we are awake
I don't have enough information to disprove or confirm what was written there, but I think the content of dreams are made on Ni informations, as the other user suggested, while sensations are not.
The latter have to be registered very well to be repeated or mixed, or just imagined during dreams.Taking into account that intuitive can for sure record various types of sensations, probably it will be more the sensor to dream them, while having a less "complex" or "symbolical" content, due to reduced intuition.
However, the thesis contrary to this deduction is what I read in many studies relating to MBTI years ago. They believe the content that the inferior Se collected during the day is reworked and granted to the individual during sleep thanks to Ni. So Ni dominant and Se inferior are connected this way: the INXJ moves away from sensations in the real world, but in his dreams he can experience them.
But, Jung himself affirms in his books "Psychological types" that the inferior Ni of Se dominant types may lead to intense mystical features (which most likely also flow into dreams), so not even the dominant Se can be excluded from this discourse
So, two different models, with two (slightly) different Ni definition and a too abstract discussion without proofs that demonstrate its validity. It is indeed a controversial discussion which brings as the only conclusion the importance of the Ni function for dreams, which is however present in every sociotype.