Autochthonous experience, heightened awareness, and perception distortion in patients with schizophrenia: A symptomatological study

Teruyuki Honda, Hiroshi Suzuki, Keiji Iwai, Yutaka Fujiwara, Hiroko Kawahara, Shigetoshi Kuroda

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

'Early symptoms of schizophrenia' (ESS) proposed by Nakayasu, are present during schizophrenic prodromal periods. Some of these symptoms can continue after the florid manifestation of the disease and the patients often experience them with ego-alien feelings. Autochthonous experience, heightened awareness, and perception distortion (AHP) were selected from the list of ESS. The aim of this study was to confirm both prevalence and specificity of AHP in patients with schizophrenia as well as the relevance of the presence of AHP to symptomatology of schizophrenia. A structured interview was conducted to identify the presence of AHP in three groups of subjects; a schizophrenia group (Sc) with 37 patients, an affective disorder group (AD) with 27 patients, and a control group (NC) with 39 people. The prevalence of AHP was compared among the groups. Within the Sc, the relevance of AHP to Brief Psychiatric Rating Scale (BPRS) was assessed. AHP were present significantly more frequently in the Sc. The total scores for BPRS in the schizophrenic patients with AHP were significantly higher than in the patients without AHP. There was close correlation between AHP and BPRS items, with the degree of relevance depending on the form or perceptual domain. In conclusion, AHP were characteristic of patients with frank schizophrenia. To judge whether AHP were adequately specific to frank schizophrenia, further research of larger subjects is needed. Understanding the characteristics of AHP in patients with frank schizophrenia is important in the symptomatological evaluation of schizophrenia.

Original languageEnglish
Pages (from-to)473-479
Number of pages7
JournalPsychiatry and clinical neurosciences
Volume58
Issue number5
DOIs
Publication statusPublished - Oct 2004

Keywords

  • Autochthonous experience
  • Early schizophrenia
  • Frank schizophrenia
  • Heightened awareness
  • Perception distortion

ASJC Scopus subject areas

  • Neuroscience(all)
  • Neurology
  • Clinical Neurology
  • Psychiatry and Mental health

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