Schizophrenia Research: Cognition (Mar 2024)

Range adaptation in schizophrenia: A one-year longitudinal study

  • Ling-ling Wang,
  • Jing-bo Gong,
  • Yi-hang Huang,
  • Shu-hong Shi,
  • Chao Yan,
  • Hui-xin Hu,
  • Yi Wang,
  • Simon S.Y. Lui,
  • Kang Ju,
  • Raymond C.K. Chan

Journal volume & issue
Vol. 35
p. 100297

Abstract

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Range adaptation refers to the representation of a stimulus value based on its relative position in the range of pre-experienced values. Altered range adaptation in value representation may be related to motivation and pleasure (MAP) deficit in schizophrenia (SCZ). This follow-up study examined the relationship between range adaptation performance and MAP symptoms in SCZ patients. We recruited 26 schizophrenia patients and followed them for 1 year. They completed an experimental task for estimating their range adaptation to outcome value (OV) and expected value (EV) at baseline and after 1 year. At baseline, we found a marginally significant and negative correlation between OV adaptation and avolition symptoms in SCZ patients. Moreover, the 1-year change of EV adaptation was significantly and negatively correlated with the change of self-report pleasure experience. Our results suggest that range adaptation may track the variations of MAP symptoms in SCZ.

Keywords