Journal of Psychiatry

Harald Gruppe

Publications

• Research Article
  Anticipation of Social and Monetary Rewards in Schizophrenia
  Author(s): Bernd Hanewald, Franziska Behrens, Harald Gruppe, Gebhard Sammer, Bernd Gallhofer, Soeren Krach, Frieder Michel Paulus, Lena Rademacher and Jona Ruben IfflandBernd Hanewald, Franziska Behrens, Harald Gruppe, Gebhard Sammer, Bernd Gallhofer, Soeren Krach, Frieder Michel Paulus, Lena Rademacher and Jona Ruben Iffland
  
  Numerous behavioural and neuroimaging studies have explored human cognitive processing of various rewards, such as food, monetary or social stimuli. Previous studies with patients suffering from schizophrenia (SZ) used incentive delay tasks with monetary rewards. Apart from slower reaction times in general in SZ, there were no differences in task performance between patients with schizophrenia and healthy controls (HC). Patients with schizophrenia have impaired social functioning and thus may have a disturbed sensitivity to social rewards. 54 schizophrenia patients and 54 matched healthy controls completed a reward paradigm (incentive delay task) with monetary (MID) and social stimuli (SID). Reaction times and hit rates were analysed using a three-way repeated measures ANOVA. Patients demonstrated increased reaction times in both, the MID and the SID tasks compared to health controls... View More»
  DOI: 10.4172/2378-5756.1000410

  Abstract PDF