Aberrantly flattened responsivity to emotional pictures in paranoid schizophrenia

Eun Lee, Jae Jin Kim, Kee Namkoong, Suk Kyoon An, Jeong Ho Seok, Yu Jin Lee, Jee In Kang, Jae Hyuk Choi, Taekyong Hong, Jong Hee Jeon, Hong Shick Lee

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


To investigate the nature of emotional experience in schizophrenia, we examined emotional responses to affective stimuli. Twenty-one outpatients with schizophrenia (9 paranoid, 12 nonparanoid) and 20 normal controls rated the arousal and valence that they experienced from the presentation of 60 pictures. Schizophrenia patients displayed less emotional responsivity to the positive stimuli and they displayed diverse responsivity to the negative stimuli, which depended upon arousal level. Further analysis, using schizophrenia subtype, indicated that nonparanoid patients reported increased negative responsivity and decreased positive responsivity, regardless of arousal level. However, paranoid schizophrenia patients showed enhanced self-reported experiences of emotion to the low arousing stimuli and diminished responsivity to the high arousing stimuli. This pattern was robust to the negative stimuli. These findings suggest that paranoid schizophrenia patients might suffer from aberrantly flattened responses to negative emotional stimuli, and that this may account for paranoid tendency and secondary social isolation in paranoid schizophrenia.

Original languageEnglish
Pages (from-to)135-145
Number of pages11
JournalPsychiatry Research
Issue number2-3
Publication statusPublished - 2006 Aug 30

Bibliographical note

Funding Information:
The present study was supported by a grant from the Korea Health 21 R&D Project, Ministry of Health and Welfare, Republic of Korea (03-PJ1-PG3-20500-0048).

All Science Journal Classification (ASJC) codes

  • Psychiatry and Mental health
  • Biological Psychiatry


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