Article Text

PDF

Interpretation of abnormal responses to the Quality Extinction Test in schizophrenia.
  1. O Gambini,
  2. C L Cazzullo,
  3. S Scarone

    Abstract

    The Quality Extinction Test (QET) has proved to be valuable for detecting abnormal hemisphere functioning in neurological as well as psychiatric patients. The present and other studies have shown a higher frequency of left side extinction in schizophrenics. This has been attributed either to contralateral parietal malfunction or to ipsilateral frontal abnormality. To evaluate the role of different brain regions in determining tactile extinctions in schizophrenic patients, a population of 70 such subjects were subgrouped according to their QET scores (left, right, left/right, and non-extinguishers) and their neuropsychological task performance profiles were compared. Right extinguishers had QET scores similar to those of non-extinguishers; left/right extinguishers were closer to left extinguishers. Non-extinguishers were the best performers and left extinguishers the poorest, particularly where right hemisphere-dependent tasks were concerned.

    Statistics from Altmetric.com

    Request permissions

    If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.