Neuropsychological and clinical correlates of antisaccade task performance in schizophrenia

D.H. Nieman*, L.J. Bour, D.H. Linszen, J. Goede, J.H.T.M. Koelman, B.P.R. Gersons, B.W. Ongerboer de Visser

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

50 Citations (Scopus)

Abstract

Objectives: To elucidate pathophysiologic mechanisms involved in abnormal antisaccade task performance in schizophrenia by investigating a possible relationship among antisaccade task performance, neuropsychological test results, and symptomatology in a group of young patients with recent- onset schizophrenia; to compare the effects of olanzapine and risperidone on antisaccades and reflexive saccades.

Background: Patients with schizophrenia consistently perform worse than controls on the antisaccade task in which the subject is required to inhibit a reflexive saccade to a suddenly appearing visual target and look in the opposite direction.

Methods: In 37 young (mean age 21 years), medicated patients with recent-onset schizophrenia the authors assessed antisaccades, reflexive saccades, neuropsychological test performance, and symptomatology. A subgroup of 1.8 patients was treated with olanzapine, and 15 patients were treated with risperidone. Reflexive-saccade and antisaccade task results were compared with those obtained in 13 control subjects.

Results: The antisaccade error rate was significantly higher in the patients than in the control subjects. In the patients, poor working memory function was related to increased antisaccade error rate. Severity of disorganization symptoms at intake was related to prolonged mean latency of the correct antisaccades. Patients on risperidone had a prolonged mean latency in the reflexive saccade task compared with patients using olanzapine.

Conclusions: Abnormal antisaccade task performance is already present in early schizophrenia and may reflect working memory dysfunction. In future studies, medication effects should be considered in interpreting eye movement test results of patients with schizophrenia.

Original languageEnglish
Pages (from-to)866-871
Number of pages6
JournalNeurology
Volume54
Issue number4
DOIs
Publication statusPublished - 22 Feb 2000
Externally publishedYes

Keywords

  • Antisaccade task
  • Eye movements
  • Neuropsychology
  • Schizophrenia

Fingerprint

Dive into the research topics of 'Neuropsychological and clinical correlates of antisaccade task performance in schizophrenia'. Together they form a unique fingerprint.

Cite this