The latest opinion poll suggests that these riskier policies are starting to sap Mrs Whitman's popularity, although she still commands a sizeable lead.
In this program, a person hooked up to the EEG sensors learned to maneuver a virtual cube around a screen using mental commands like those he or she might use when controlling a car.
Ms. Giffords's immediate responsiveness to commands, such as squeezing a doctor's hand, suggests that she wasn't in a coma and that her brain stem and the brain's core structures had relatively little damage.