Home |  English version |  Mappa |  Commenti |  Sondaggio |  Staff |  Contattaci Cerca nel sito  
Istituto di scienze e tecnologie della cognizione

Torna all'elenco Contributi in rivista anno 2014

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Individual differences in gambling proneness among rats and common marmosets: an automated choice task.

Anno di pubblicazione: 2014

Formato: Elettronico

Autori: Francesca Zoratto, 1,2; Emma Sinclair, 1; Arianna Manciocco, 1,3; Augusto Vitale, 1; Giovanni Laviola, 1; and Walter Adriani, 1

Affiliazioni autori: 1 Section of Behavioural Neuroscience, Department of Cell Biology and Neurosciences, Istituto Superiore di Sanita, Viale Regina Elena 299, 00161 Rome, Italy 2 Bambino Gesu Children's Hospital IRCCS, Rome, Italy 3 Istituto di Scienze e Tecnologie della Cognizione, National Research Council (ISTC-CNR), Rome, Italy

Autori CNR:


Lingua: inglese

Abstract: Interest is rising for animal modeling of pathological gambling. Using the operant probabilistic-delivery task (PDT), gambling proneness can be evaluated in laboratory animals. Drawing a comparison with rats, this study evaluated the common marmoset (Callithrix jacchus) using a PDT. By nose- or hand-poking, subjects learnt to prefer a large (LLL, 5-6 pellets) over a small (SS, 1-2 pellets) reward and, subsequently, the probability of occurrence of large-reward delivery was decreased progressively to very low levels (from 100% to 17% and 14%). As probability decreased, subjects showed a great versus little shift in preference from LLL to SS reinforcer. Hence, two distinct subpopulations ("non-gambler" versus "gambler") were differentiated within each species. A proof of the model validity comes from marmosets' reaction to reward-delivery omission. Namely, depending on individual temperament ("gambler" versus "non-gambler"), they showed either persistence (i.e., inadequate pokes towards LLL) or restlessness (i.e., inadequate pokes towards SS), respectively. In conclusion, the marmoset could be a suitable model for preclinical gambling studies. Implementation of the PDT to species other than rats may be relevant for determining its external validity/generalizability and improving its face/construct validity.

Lingua abstract: inglese

Pagine da: 927685

Pagine totali: 12


BioMed Research International Hindawi Publishing Corporation
Paese di pubblicazione: Egitto
Lingua: inglese
ISSN: 2314-6141

Numero volume: 2014

DOI: 10.1155/2014/927685

Referee: Sė: Internazionale

Indicizzato da:

  • ISI Web of Science (WOS) [000337480000001]
  • Scopus [2-s2.0-84902126203]

URL: http://www.hindawi.com/journals/bmri/2014/927685/

Strutture CNR:

Torna indietro Richiedi modifiche Invia per email Stampa
Home Il CNR  |  I servizi News |   Eventi | Istituti |  Focus