• Vanessa C Fazio, Mark R Lovell, Jamie E Pardini, and Michael W Collins.
• University of Pittsburgh Medical Center, Department of Orthopaedics, Pittsburgh, PA, USA.
• NeuroRehabilitation. 2007 Jan 1;22(3):207-16.

AbstractThe objective of this study was to examine differences in neurocognitive performance between symptomatic concussed athletes, a group of concussed athletes with no subjective symptoms, and a non-concussed control group of athletes. All concussed athletes were evaluated within one week of injury using the ImPACT computerized test battery. Results indicate that concussed athletes who denied subjective symptoms demonstrated poorer performance than control subjects on all four composite scores of the ImPACT test batters (Verbal Memory, Visual Memory, Reaction Time and Processing Speed However, the concussed but asymptomatic group demonstrated significantly better performance than did the concussed and symptomatic group. Thus, concussed athletes who did not report subjective symptoms were not fully recovered based on neurocognitive testing. This study underscores the importance of neurocognitive testing in the assessment of concussion sequelae and recovery.

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