Hi CS,
A physiotherapist who specialized in PWP nagged and nagged me not to talk when I walk.
Multitasking....is that a real word?
Well that's what she called it, anyway it's apparently much more difficult for a parky than the average person and the cause of many a fall.
I guess your reaction could come under the word multitasking even if you weren't talking you weren't concentrating on standing or walking.
Hope this helps.
Cheers,
Lee