Apomorphine-induced pecking in pigeons classically conditioned to environmental cues

Delius, Juan; Lindenblatt, Ulrike

Apomorphine-induced pecking in pigeons classically conditioned to environmental cues

Dateien

Apomorphine-induced pecking.pdfGröße: 420.58 KBDownloads: 474

Datum

1987

Autor:innen

Delius, Juan

Lindenblatt, Ulrike

Publikationstyp

Zeitschriftenartikel

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Psychopharmacology. 1987, 93(2). ISSN 0033-3158. Available under: doi: 10.1007/BF00179938

Zusammenfassung

The dopamine agonist apomorphine elicits protracted pecking when injected systemically (1 mg/kg) into pigeons. In two experiments it was investigated whether apomorphine would function as an unconditioned stimulus in the classical conditioning of pecking in these animals. An experimental design based on a differentiation procedure was used so that possible pseudoconditioning effects were controlled. Two differently coloured test chambers served as negative (CS-) and positive conditioned (CS+) stimuli. During the training phase the subjects experienced the former while injected with saline, and the latter while injected with apomorphine. In later tests not involving any injections the pigeons made significantly more pecks (conditioned response) in the CS+ chamber than in the CS-chamber. In the first and second experiments the conditioned stimuli were, respectively, discrete and diffuse visual cues, but both had similar effects. The conditioning obtained may explain sensitization effects that are observed with repeated apomorphine injections. Apomorphine probably also functions as a positive reinforcer for instrumental conditioning in pigeons.

Fachgebiet (DDC)

150 Psychologie

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ISO 690

DELIUS, Juan, Ulrike LINDENBLATT, 1987. Apomorphine-induced pecking in pigeons classically conditioned to environmental cues. In: Psychopharmacology. 1987, 93(2). ISSN 0033-3158. Available under: doi: 10.1007/BF00179938

BibTex

@article{Delius1987Apomo-20303,
  year={1987},
  doi={10.1007/BF00179938},
  title={Apomorphine-induced pecking in pigeons classically conditioned to environmental cues},
  number={2},
  volume={93},
  issn={0033-3158},
  journal={Psychopharmacology},
  author={Delius, Juan and Lindenblatt, Ulrike}
}

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