WAUSAU, Wis. (AP) -- An Athens man imprisoned for shaking and killing his child is seeking a new trial after questions have been raised about "shaken baby syndrome."

An appeals court freed former Waunakee daycare provider Audrey Edmunds in February saying new research cast doubt on her guilt. The court noted some medical experts now doubt babies can be killed by shaking alone.

That has prompted an attorney for Quentin Louis to seek testimony from medical experts who might be able to help free him. The 27-year-old Louis is serving a 20-year sentence for the March 2005 death of his 4-month-old daughter.

Attorney Edward Hunt has filed motions in Marathon County Circuit Court asking for a new trial because of ineffective counsel and potential new evidence.