Attentional disturbances in patients with unipolar psychotic depression: A selective and sustained attention study

Antonis Politis, Lefteris Lykouras, Polyxeni Mourtzouchou, George N. Christodoulou

Research output: Contribution to journalArticle

Abstract

Psychotic depression is a clinical subtype of major depressive disorder in the recent editions of the psychiatric diagnostic systems ICD-10 (1992) and DSM-IV (1994). Recent evidence suggests that psychotic depressed patients are more impaired on neuropsychologic tests measuring attention as compared to nonpsychotic depressed patients. However, information on this issue between psychotic and nonpsychotic depression is limited. It has become clear that attention is not a single concept; thus we studied both selective and sustained attention using the theoretic model of automatic and controlled information processing. Thirty-two patients with major depressive disorder, 16 psychotics and 16 nonpsychotics, were investigated and compared with 20 patients with schizophrenic disorder and 20 healthy volunteers who comprised the control groups, using Ruff's 2 and 7 selective attention tests. Compared to the healthy controls, both depressed groups were impaired; however, the psychotic depressed group was more severely impaired on both measures. Attentional performance speed and accuracy scores, on both effortless and effortful conditions, were significantly lower in the psychotic depressed group than in the nonpsychotic depressed group. No significant differences were found on attentional performance between the psychotic depressed patients and those with schizophrenic disorder. Attention deficits are thus more prominent in psychotic than in nonpsychotic depression. Furthermore, taking attention as a criterion, psychotic depression, although of mood congruent subtype, lies closer to schizophrenia than to nonpsychotic depression.

Original languageEnglish (US)
Pages (from-to)452-459
Number of pages8
JournalComprehensive Psychiatry
Volume45
Issue number6
DOIs
StatePublished - Nov 2004
Externally publishedYes

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Depressive Disorder
Depression
Schizophrenia
Major Depressive Disorder
Neuropsychological Tests
International Classification of Diseases
Automatic Data Processing
Diagnostic and Statistical Manual of Mental Disorders
Psychiatry
Healthy Volunteers
Theoretical Models
Control Groups

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Biological Psychiatry
  • Psychology(all)

Cite this

Attentional disturbances in patients with unipolar psychotic depression : A selective and sustained attention study. / Politis, Antonis; Lykouras, Lefteris; Mourtzouchou, Polyxeni; Christodoulou, George N.

In: Comprehensive Psychiatry, Vol. 45, No. 6, 11.2004, p. 452-459.

Research output: Contribution to journalArticle

Politis, Antonis ; Lykouras, Lefteris ; Mourtzouchou, Polyxeni ; Christodoulou, George N. / Attentional disturbances in patients with unipolar psychotic depression : A selective and sustained attention study. In: Comprehensive Psychiatry. 2004 ; Vol. 45, No. 6. pp. 452-459.
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