Computerized assessment of cognitive impairment in narcoleptic patients

K. S. Ha, H. K. Yoo, I. K. Lyoo, D. U. Jeong

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


Objectives - This study was aimed to investigate the comprehensive range of cognitive performance using the objective computerized assessment system in narcolepsy and age, gender, and IQ-matched healthy comparison. Materials and methods - The cognitive functions of 24 patients with narcolepsy and 24 healthy comparison subjects were assessed. Results - Narcoleptics performed more frequent omission and commission errors in the vigilance test, and more frequent omission errors in the continuous performance test. Narcoleptics' response time was slower than healthy volunteers, and the differences were more exaggerated in more complex tasks. The simple repetitious working performance was more impaired in the narcoleptic subjects than in healthy comparison subjects. Narcolepsy group showed worse performances in the determination unit than the comparison group, and this impairment became more salient in faster stimuli relative to slower ones. Conclusions - Narcoleptics have deficits of efficiency in attention allocation and execution as well as simple vigilance problem.

Original languageEnglish
Pages (from-to)312-316
Number of pages5
JournalActa Neurologica Scandinavica
Issue number5
StatePublished - Nov 2007


  • Attention
  • Cognition
  • Higher cortical function
  • Narcolepsy
  • Neurocognition
  • Vienna system
  • Vigilance


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