Dennis wrote: "It seems that most, but by no means all, PWP lose their "right response"when "off". Dennis this is also called the "Righting Reflex". Tabers Medical Dictionary defines... Righting reflex - any of the reflexes that enable an animal to maintain the body in a definate relationship to the head and thus maintain its body right side up. This righting reflex can be lost in some diseases like Multiple Sclerosis when a lesion knocks out that center. Gail Vass