Now showing items 1-16 of 16

    • Animal models of psychopathology: Historical models and the pavlovian contribution 

      Laborda Rojas, Mario; Miguez, Gonzalo; Polack, Cody W.; Miller, Ralph R. (2012)
      Research using non-human animals as experimental subjects to understand human behavior have been based on the Darwinian notion of continuity between species. In this framework, we find analogous models to understand human ...
    • Assessing the blocking of occasion setting 

      Alfaro, Felipe; Mallea, Jorge; Laborda Rojas, Mario; Cañete, Aracelli; Míguez Cavieres, Gonzalo (Elsevier, 2018)
      An occasion setter (OS) is a stimulus or context with the capacity to disambiguate an ambiguous conditioned stimulus (CS). Previous research has shown that OSs share some features with regular Pavlovian CSs. Amongst them, ...
    • Behavioral techniques for attenuating the expression of fear associations in an animal model of anxiety 

      Laborda Rojas, Mario; Polack, Cody W.; Miguez, Gonzalo; Miller, Ralph R. (Elsevier, 2014)
      Background and objectives: Recent data indicate that extinguished fear often returns when the testing conditions differ from those of treatment. Several manipulations including extensive extinction training, extinction ...
    • Classical conditioning and pain: Conditioned analgesia and hyperalgesia 

      Miguez, Gonzalo; Laborda Rojas, Mario; Miller, Ralph R. (Elsevier, 2014)
      This article reviews situations in which stimuli produce an increase or a decrease in nociceptive responses through basic associative processes and provides an associative account of such changes. Specifically, the ...
    • Comparing the context specificity of extinction and latent inhibition 

      Miller, Ralph R.; Laborda Rojas, Mario; Polack, Cody W.; Míguez Cavieres, Gonzalo (Springer, 2015)
      Exposure to a cue alone either before (i.e., latent inhibition treatment) or after (i.e., extinction) the cue is paired with an unconditioned stimulus results in attenuated conditioned responding to the cue. Here we report ...
    • Contrasting AAC and ABC renewal: the role of context associations 

      Laborda Rojas, Mario; Witnauer, James E.; Miller, Ralph R. (Springer, 2011)
      Rats were used in a lick suppression preparation to assess the contribution of conditioned-stimulus (CS)– context and context–unconditioned-stimulus (US) associations to experimental extinction. Experiment 1 ...
    • Crónica del Laboratorio de Psicología Experimental: Prof. Ronald Betancourt Mainhard (1999-2016) 

      Lira Ampuero, Daniela; Bustamente Alvarez, Javier; Quezada Scholz, Vanetza; Miguez Cavieres, Gonzalo; Laborda Rojas, Mario; Bustamente Alvarez (Neuropsicología Cl., 2016)
      The present article constitutes a chronicle of the Laboratorio de Psicologia Experimental: Prof. Ronald Betancourt Mainhard of the Psychology Department of the Universidad de Chile, in the 1999-2016 period. Using the ...
    • Efecto de la extinción en múltiples contextos sobre la renovación de la tolerancia asociativa al etanol 

      Betancourt Mainhard, Sigmond; Corada Luis, Leonor; Dominichetti Camus, Juan; Laborda Rojas, Mario; Martínez Miranda, Gabriel; Miguez Cavieres, Gonzalo (COLEGIO OFICIAL DE PSICOLOGOS DE ASTURIAS, 2008-05)
      The Pavlovian analysis of drug tolerance describes how the contexts of drug administration participate in the elicitation of compensatory conditioned responses that are, at least partly, responsible for tolerance. Findings ...
    • Extinction cues do not reduce recovery of extinguished conditioned fear in humans 

      Quezada Scholz, Vanetza; Laborda Rojas, Mario; Díaz, Marcela C.; Navarro, Víctor M.; Mallea, Jorge; Repetto, Paula; Orellana Vidal, Gricel; Betancourt, Ronald (Universidad de Almeria, 2018)
      We evaluated whether an extinction cue can reduce (or prevent) the recovery of previously extinguished fear conditioning using an ABC renewal design in humans. Two experiments were carried out. In Experiment 1, two groups ...
    • Extinction training can make the extinction context a stimulusspecific inhibitor: a potential mechanism of experimental renewal 

      Miller, Ralph R.; Laborda Rojas, Mario; Polack, Cody W. (Elsevier, 2020)
      Renewal is the recovery of extinguished responding to a conditioned stimulus when testing occurs outside the extinction context. Renewal has been explained as the extinction context becoming a negative occasion setter ...
    • Modelos animales en psicopatología experimental: miedo, tolerancia a las drogas y condicionamiento 

      Laborda Rojas, Mario (Universidad de Chile, 2009)
      La noción darwiniana de continuidad de las especies ha justificado la investigación con animales no-humanos para entender al hombre. Si el hombre está evolutivamente conectado con el resto de los animales, entonces podemos ...
    • MODULACIÓN CONTEXTUAL DE LA TOLERANCIA ASOCIATIVA AL ETANOL 

      Betancourt Mainhard, Sigmond; Inostroza Parodi, Marión; Laborda Rojas, Mario (FOUNDATION ADVANCEMENT PSYCHOLOGY, 2008)
      There is evidence that drug-paired cues not only become associated with the drug effects but also become occasion setters that modulate the association of other cues with the drug effects, contributing to the development ...
    • Notas históricas de la psicología en Chile 

      Laborda Rojas, Mario; Quezada Scholz, Vanetza (Editorial Universitaria, 2010)
    • On the differences in degree of renewal produced by the differentrenewal designs 

      Polack, Cody W.; Laborda Rojas, Mario; Miller, Ralph R. (Elsevier, 2013)
      tThis paper addresses sources contributing to the differences in the degree of recovery from extinctionobserved with different renewal paradigms. In two lick suppression experiments with rats, we assessedthe role of the ...
    • Preventing Return of Fear in an Animal Model of Anxiety: Additive Effects of Massive Extinction and Extinction in Multiple Contexts 

      Laborda Rojas, Mario; Miller, Ralph R. (Behavior Therapy 44 (2013) 249–261, 2013)
      Fear conditioning and experimental extinction have been presented as models of anxiety disorders and exposure therapy, respectively. Moreover, the return of fear serves as a model of relapse after exposure therapy. Here ...
    • Preventing the recovery of extinguished ethanol tolerance 

      González, Valeria V.; Navarro, Victor; Míguez Cavieres, Gonzalo; Betancourt, Ronald; Laborda Rojas, Mario (ELSEVIER SCIENCE BV., 2016)
      There is substantial evidence that drug-paired cues become associated with drug effects. From a Pavlovian perspective, these cues act as conditioned stimuli and elicit conditioned compensatory responses that contribute to ...