Blocking and unblocking in a navigation task
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| Format: | Artículo científico |
| Langue: | en |
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Universitat de València
2005
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| _version_ | 1876441387653660672 |
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| author | M. Arall |
| author_facet | M. Arall |
| contents | Blocking and unblocking in a navigation task M. Arall T. Rodrigo V.D. Chamizo Psicología Rodrigo, Chamizo, McLaren, & Mackintosh (1997) demonstrated theblocking effect in a navigational task using a swimming pool: rats initiallytrained to use three landmarks (ABC) to find an invisible platform learnedless about a fourth landmark (X) added later than did rats trained from theoutset with these four landmarks (ABCX). The aim of the experimentreported here was to demonstrate unblocking using a similar procedure as inthe previous work. Three groups of rats were initially trained to find aninvisible platfom in the presence of three landmarks: ABC for the Blockingand Unblocking groups and LMN for the Control group. Then, all animalswere trained to find the platform in the presence of four landmarks, ABCX.In this second training, unlike animals in the Blocking group to which onlya new landmark (X) was added in comparison to the first training, theanimals in the Unblocking group also had a change in the platform position.In the Control group, both the four landmarks and the platform positionwere totally new at the beginning of this second training. As in Rodrigo etal. (1997) a blocking effect was found: rats in the Blocking group learnedless with respect to the added landmark (X) than did animals in the Controlgroup. However, rats in the Unblocking group learned about the addedlandmark (X) as well as did animals in the Control group. The results areinterpreted as an unblocking effect due to a change in the platform positionbetween the two phases of training, similarly to what is normal in classicalconditioning experiments, in which a change in the conditions ofreinforcement between the two training phases of a blocking design producean attenuation or elimination of this effect. These results are explainedwithin an error-correcting connectionist account of spatial navigation(McLaren, 2002). 2005 artículo científico 0211-2159 https://www.redalyc.org/articulo.oa?id=16926201 en http://www.redalyc.org/revista.oa?id=169 Psicológica application/pdf Universitat de València Psicológica (España) Num.2 Vol.26 |
| format | Artículo científico |
| id | redalyc_16926201 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Universitat de València |
| spellingShingle | Blocking and unblocking in a navigation task M. Arall Psicología Blocking and unblocking in a navigation task M. Arall T. Rodrigo V.D. Chamizo Psicología Rodrigo, Chamizo, McLaren, & Mackintosh (1997) demonstrated theblocking effect in a navigational task using a swimming pool: rats initiallytrained to use three landmarks (ABC) to find an invisible platform learnedless about a fourth landmark (X) added later than did rats trained from theoutset with these four landmarks (ABCX). The aim of the experimentreported here was to demonstrate unblocking using a similar procedure as inthe previous work. Three groups of rats were initially trained to find aninvisible platfom in the presence of three landmarks: ABC for the Blockingand Unblocking groups and LMN for the Control group. Then, all animalswere trained to find the platform in the presence of four landmarks, ABCX.In this second training, unlike animals in the Blocking group to which onlya new landmark (X) was added in comparison to the first training, theanimals in the Unblocking group also had a change in the platform position.In the Control group, both the four landmarks and the platform positionwere totally new at the beginning of this second training. As in Rodrigo etal. (1997) a blocking effect was found: rats in the Blocking group learnedless with respect to the added landmark (X) than did animals in the Controlgroup. However, rats in the Unblocking group learned about the addedlandmark (X) as well as did animals in the Control group. The results areinterpreted as an unblocking effect due to a change in the platform positionbetween the two phases of training, similarly to what is normal in classicalconditioning experiments, in which a change in the conditions ofreinforcement between the two training phases of a blocking design producean attenuation or elimination of this effect. These results are explainedwithin an error-correcting connectionist account of spatial navigation(McLaren, 2002). 2005 artículo científico 0211-2159 https://www.redalyc.org/articulo.oa?id=16926201 en http://www.redalyc.org/revista.oa?id=169 Psicológica application/pdf Universitat de València Psicológica (España) Num.2 Vol.26 |
| title | Blocking and unblocking in a navigation task |
| topic | Psicología |
| url | https://www.redalyc.org/articulo.oa?id=16926201 |