In the pаper, “Optоgenetics enаbles functiоnаl analysis оf human embryonic stem cell-derived grafts in a Parkinson’s disease model” researchers used a toxin to kill dopamine neurons in the substantia nigra on one side of a mouse's brain. When these mice were given amphetamine they exhibited lateralized behavior and rotated in one direction. This lateralized behavior was rescued by a stem cell graft. In experimental animals, the stem cells in the graft expressed halorhodopsin. If light is used to activate the halorhodopsin in these grafted neurons and the experimental animals are also given amphetamine, would you expect these animals to exhibit the lateralized behavior of rotating in one direction? In other words, would you expect to see amphetamine induced rotation in mice that have had their amphetamine induced lateralized behavior rescued by stem cells expressing halorhodopsin when the halorhodopsin is activated by light?