On Aug. 1, 2013, plaintiff Miriam Sosa, 22, a student and part-time worker, was walking her bicycle in a marked crosswalk on Fulton Street, in San Francisco, when she was struck by a vehicle operated by Yong Zhou. Sosa was projected several feet before hitting her head on the asphalt. Sosa sued Zhou, alleging that Zhou was negligent in the operation of the vehicle. Zhou conceded liability., Sosa sustained blunt force trauma to her head, and sustained cuts and abrasions to her body. She also complained of pain to her back and neck. As a result, she was transported by ambulance to the trauma center at San Francisco General Hospital, in San Francisco. Sosa was diagnosed with a mild traumatic brain injury and post-concussive syndrome. She contended that she suffered persistent headaches and cognitive deficits, including memory impairment and attention deficits. She was subsequently evaluated by a neurologist and neuropsychologist to assess the functional impact of her brain injury. In addition, Sosa treated her neck and back pain at Daly City Chiropractic Center, in Daly City, until those issues resolved and she underwent counseling for her anxiety and emotional distress. Sosa claimed that she still has cognitive impairments. However, by the time the case resolved, she had graduated college and was working for the Centers for Disease Control. Defense counsel contended that Sosa made a full recovery and that any persistent symptoms were somatic (psychological), and not physical.