Journal of the International Neuropsychological Society



BRIEF COMMUNICATION

Relation between subjective fogginess and neuropsychological testing following concussion


GRANT L.  IVERSON  a1 c1 , MICHAEL  GAETZ  a2 , MARK R.  LOVELL  a3 and MICHAEL W.  COLLINS  a3
a1 University of British Columbia and Riverview Hospital, Vancouver, British Columbia, Canada
a2 University of the Fraser Valley, Abbotsford, British Columbia, Canada
a3 University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania

Article author query
iverson gl   [PubMed][Google Scholar] 
gaetz m   [PubMed][Google Scholar] 
lovell mr   [PubMed][Google Scholar] 
collins mw   [PubMed][Google Scholar] 

Abstract

The purpose of this study was to examine the relation between the subjective report of feeling foggy at one-week post concussion and acute neuropsychological outcome. The outcome variables were derived from a computerized neuropsychological screening battery, Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT). Participants were 110 high school students who sustained a sports-related concussion and were evaluated 5–10 days post injury (M = 6.8 days). Athletes were divided into two groups on the basis of self-reported fogginess. The first group reported no fogginess (n = 91), whereas the second group reported experiencing some degree of fogginess (n = 19) on a 6-point scale. The athletes with persistent fogginess experienced a large number of other post-concussion symptoms, compared to the athletes with no reported fogginess. In addition, the athletes with persistent fogginess had significantly slower reaction times, reduced memory performance, and slower processing speed. Thus, athletes with any degree of self-reported fogginess at one-week post injury are likely to have adverse effects from their concussions in multiple domains. (JINS, 2004, 10, 904–906.)

(Received May 23 2002)
(Revised October 31 2003)
(Accepted November 10 2003)


Key Words: Concussion; Neuropsychological Testing; Sports.

Correspondence:
c1 Reprint requests to: Grant Iverson, Ph.D., Department of Psychiatry, 2255 Wesbrook Mall, University of British Columbia, Vancouver, B.C. Canada, V6T 2B4. E-mail: giverson@interchange.ubc.ca