Naslov
Early changes of critical flicker fusion and decision reaction time after mild traumatic brain injury

Autori
Vukašinović, Darko ; Mubrin, Zdenko ; Jančuljak, Davor ; Malojčić, Branko ; Nikolić, Bojana ; Soldo-Butković, Silva

Izvornik
European journal of neurology (1351-5101) 10 (2003), Supplement 1;

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, kongresno priopcenje, znanstveni

Ključne riječi
critical flicker fusion; reaction time; mild traumatic brain injury

Sažetak
Background: Critical flicker fusion(CFF), a treshold when individual flashes of light seem to fuse, is a measure of temporal resolution ability which is dependent on the subject's conscious determination of treshold. The aim of this study was to assess cognitive deficit in patients in an early stage after mild traumatic brain injury (MTBI) by use of CFF and reaction time tasks. Methods: 41 patients after MTBI were matched with 41 controls in age, sex and education level. CFF, choice reaction time (CRT) and simple reaction time (SRT) were registered in both groups. Pure cognitive processing speed (decision reaction time, DRT) was calculated from CRT and SRT. Results. No signs of global cognitive impairment were found among MTBI patients (Mini Mental examination score 28.4 +/- 1.9) The patients reached slower CFF treshold than controls, both with increasing flash frequency (P<0.001) and decreasing flash frequency (P<0.005). DRT was reliably longer in MTBI patients than in controls (P<0.03), while no significant differences were found in both CRT and SRT between the groups. Conclusion: Changes of critical flicker fusion and of pure cognitive processing speed can be registered in the early stage of recovery after mild traumatic brain injury. These methods may serve as useful tools for assesing cognitive deficit in those patients.

Izvorni jezik
Engleski

Znanstvena područja
Kliničke medicinske znanosti

POVEZANOST RADA