By Aaron Wilson
As the NFL continues to grapple with the issue of concussions and awareness is continuing to be raised about the league’s concussion testing protocol, Dr. Vernon Williams, a neurologist and director of the Kerlan-Jobe Center for Sports Neurology & Pain Medicine in Los Angeles, discussed concussions with The Houston Chronicle.
The last concussion suffered by a Texans player was wide receiver DeAndre Hopkins, who sustained one during a loss to the Carolina Panthers and returned to practice five days later and then played without incident seven days after the head injury against the Tampa Bay Buccaneers. 
Chronicle: What is the protocol for passing a baseline neurological test or exam? What’s involved?