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Self-Regulation of Slow Cortical Potentials in Psychiatric Patients : Schizophrenia

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Datum

1992

Autor:innen

Schneider, Frank
Heimann, Hans
Lutzenberger, Werner
Mattes, Regina
Birbaumer, Niels
Bartels, Mathias

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Published

Erschienen in

Biofeedback and Self-Regulation. 1992, 17(4), pp. 277-292. Available under: doi: 10.1007/BF01000051

Zusammenfassung

Slow cortical potentials (SCPs) are considered to reflect the regulation of attention resources and cortical excitability in cortical neuronal networks. Impaired attentional functioning, as found in patients with schizophrenic disorders, may covary with impaired SCP regulation. This hypothesis was tested using a self-regulation paradigm. Twelve medicated male schizophrenic inpatients and 12 healthy male controls received continuous feedback of their SCPs, during intervals of 8 s each, by means of a visual stimulus (a stylized rocket) moving horizontally across a TV screen. The position of the feedback stimulus was a linear function of the integrated SCP at each point in time during the feedback interval. Subjects were required to increase or reduce negative SCPs (referred to pretrial baseline) depending on the presentation of a discriminative stimulus. The correct response was indicated by the amount of forward movement of the feedback stimulus and by monetary rewards. Schizophrenics participated in 20 sessions (each comprising 110 trials), while controls participated in 5 sessions. Compared with the healthy controls, schizophrenics showed no significant differentiation between negativity increase and negativity suppression during the first sessions. However, in the last 3 sessions, patients achieved differentiation similar to controls, demonstrating the acquisition of SCP control after extensive training.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
150 Psychologie

Schlagwörter

Slow cortical potentials, schizophrenia, biofeedback, instrumental learning, CNV

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ISO 690SCHNEIDER, Frank, Brigitte ROCKSTROH, Hans HEIMANN, Werner LUTZENBERGER, Regina MATTES, Thomas ELBERT, Niels BIRBAUMER, Mathias BARTELS, 1992. Self-Regulation of Slow Cortical Potentials in Psychiatric Patients : Schizophrenia. In: Biofeedback and Self-Regulation. 1992, 17(4), pp. 277-292. Available under: doi: 10.1007/BF01000051
BibTex
@article{Schneider1992SelfR-11035,
  year={1992},
  doi={10.1007/BF01000051},
  title={Self-Regulation of Slow Cortical Potentials in Psychiatric Patients : Schizophrenia},
  number={4},
  volume={17},
  journal={Biofeedback and Self-Regulation},
  pages={277--292},
  author={Schneider, Frank and Rockstroh, Brigitte and Heimann, Hans and Lutzenberger, Werner and Mattes, Regina and Elbert, Thomas and Birbaumer, Niels and Bartels, Mathias}
}
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