I hadn't seen anyone mention Dabrowski's Overexcitabilities as one place to get a certain context on it and some other effects.

http://www.stephanietolan.com/dabrowskis.htm

DS6.5 randomly has tag issues, and the sight of anyone crying on tv or otherwise will get him (however, he seems to be working through it, and now plays for some secondary sympathy when he internally may have had a choice on how to respond.) Tickling same thing. Also very robust awareness of cooking smells (herbs, spices, etc.) as a novelty seeker this works out in some fun complex dinners.