Tickle TurnOn,Ama Rio,Foot Tickling,Soles,Stocks,Arousal Starring Ama Rio The Multicenter Study Investigating the Link Between Tickling and Arousal in North American Women led by Principal Dr. James T. Darke now continues with Ama Rio, An actress, rising in her career, who finds herself inexplicably drawn to fantasies of being tied and tickled.