Possibly some broader sensory issues as well. There are some interesting theories about this, for example the idea that people who are more generally separated

Possibly some broader sensory issues as well. There are some interesting theories about this, for example the idea that people who are more generally separated from the sensory world on the daily (idea people, planners, etc) are by definition less acclimated to and possibly thus turned more completely on/off by sensory phenomena of varying kinds.