Browsing by Author "Hurtado León, Esteban Andrés"

Now showing 1 - 13 of 13
  • No Thumbnail Available
    Item
    Action-Language Coupling: A depth erp study on motor (On Motor) (Premotor, M1) and semantic are (IFG, STS)
    (2012) Cardona, Juan Felipe; Vidal Dos Santos, Yamil; Blenkmann, Alejandro; Aravena, Pia; Hurtado León, Esteban Andrés; Nerguizian, Mirna; Amoruso, Lucía; Kochen, Silvia; Bekinschetein, Tristán; Ibáñez Barassi, Agustín Mariano
  • Thumbnail Image
    Item
    An adaptive reading tutor using Markov models to develop phonological awareness
    (2008) Hurtado León, Esteban Andrés; Soto Arriaza, Álvaro Marcelo; Pontificia Universidad Católica de Chile. Escuela de Ingeniería
    La conciencia fonológica, que es cierta forma de sensibilidad a la estructura sonora del lenguage, es una habilidad fundamental en el desarrollo de la lectura. Debe ser enseñada explícitamente y, de ser posible, de manera individualizada. En una sala de clase, es difícil entregar a cada niño atención personalizada, por lo cual resultaría beneficioso el contar con un sistema de enseñanza informatizado que se adapte automáticamente a cada niño. Tradicionalmente, los sistemas tutores inteligentes (ITS, por sus siglas en inglés), han sido utilizados para enseñar en dominios donde existe un modelo de la metacognición del alumno y/o del profesor.
  • Thumbnail Image
    Item
    Consequences of theoretically modelling the mind as a computer
    (2017) Hurtado León, Esteban Andrés; Cornejo Alarcón, Carlos; Pontificia Universidad Católica de Chile. Escuela de Psicología
    The computational theory of mind holds that the mind is a computer. It does not restrict how the computer is to be programmed, but provides a metatheoretical framework for particular theories to propose different ways in which computer systems can support mentalprocesses. It also functions as a claim about the nature of the mind. Its main goal is to explain mental phenomena based on computational processes.This work argues that well known limitations of computers require more attention in order to understand the possibilities and limitations of the computational theory of mind itself. To that end, a revision of the Turing halting problem and Gödel’s incomplenteness theorems is included as a foundation for arguments about what computational models of the mind could and could not achieve.Contrary to traditional images,computational procedures can be diverse,flexible,adaptable, and deal with the uncertain in successful ways. Therefore, naive criticism of the computational theory of mind could be misplaced. We argue that the main limitations that computational modeling imposes on psychology are: that some important questions have no general answer; that theories are underdetermined by evidence in important ways; and that theories cannot answer specific questions about the nature of their object of study. We also show that the same limitations apply to any theory that restricts itself to making systematic predictions based on finite observations.
  • Thumbnail Image
    Item
    Contextual blending of ingroup/outgroup face stimuli and word valence : LPP modulation and convergence of measures
    (2009) Hurtado León, Esteban Andrés; Haye M., Andrés; González Rial, Ramiro Germán; Manes, Facundo; Ibáñez, Agustín
    Abstract Background Several event related potential (ERP) studies have investigated the time course of different aspects of evaluative processing in social bias research. Various reports suggest that the late positive potential (LPP) is modulated by basic evaluative processes, and some reports suggest that in-/outgroup relative position affects ERP responses. In order to study possible LPP blending between facial race processing and semantic valence (positive or negative words), we recorded ERPs while indigenous and non-indigenous participants who were matched by age and gender performed an implicit association test (IAT). The task involved categorizing faces (ingroup and outgroup) and words (positive and negative). Since our paradigm implies an evaluative task with positive and negative valence association, a frontal distribution of LPPs similar to that found in previous reports was expected. At the same time, we predicted that LPP valence lateralization would be modulated not only by positive/negative associations but also by particular combinations of valence, face stimuli and participant relative position. Results Results showed that, during an IAT, indigenous participants with greater behavioral ingroup bias displayed a frontal LPP that was modulated in terms of complex contextual associations involving ethnic group and valence. The LPP was lateralized to the right for negative valence stimuli and to the left for positive valence stimuli. This valence lateralization was influenced by the combination of valence and membership type relevant to compatibility with prejudice toward a minority. Behavioral data from the IAT and an explicit attitudes questionnaire were used to clarify this finding and showed that ingroup bias plays an important role. Both ingroup favoritism and indigenous/non-indigenous differences were consistently present in the data. Conclusion Our results suggest that frontal LPP is elicited by contextual blending of evaluative judgments of in-/outgroup information and positive vs. negative valence association and confirm recent research relating in-/outgroup ERP modulation and frontal LPP. LPP modulation may cohere with implicit measures of attitudes. The convergence of measures that were observed supports the idea that racial and valence evaluations are strongly influenced by context. This result adds to a growing set of evidence concerning contextual sensitivity of different measures of prejudice.Abstract Background Several event related potential (ERP) studies have investigated the time course of different aspects of evaluative processing in social bias research. Various reports suggest that the late positive potential (LPP) is modulated by basic evaluative processes, and some reports suggest that in-/outgroup relative position affects ERP responses. In order to study possible LPP blending between facial race processing and semantic valence (positive or negative words), we recorded ERPs while indigenous and non-indigenous participants who were matched by age and gender performed an implicit association test (IAT). The task involved categorizing faces (ingroup and outgroup) and words (positive and negative). Since our paradigm implies an evaluative task with positive and negative valence association, a frontal distribution of LPPs similar to that found in previous reports was expected. At the same time, we predicted that LPP valence lateralization would be modulated not only by positive/negative associations but also by particular combinations of valence, face stimuli and participant relative position. Results Results showed that, during an IAT, indigenous participants with greater behavioral ingroup bias displayed a frontal LPP that was modulated in terms of complex contextual associations involving ethnic group and valence. The LPP was lateralized to the right for negative valence stimuli and to the left for positive valence stimuli. This valence lateralization was influenced by the combination of valence and membership type relevant to compatibility with prejudice toward a minority. Behavioral data from the IAT and an explicit attitudes questionnaire were used to clarify this finding and showed that ingroup bias plays an important role. Both ingroup favoritism and indigenous/non-indigenous differences were consistently present in the data. Conclusion Our results suggest that frontal LPP is elicited by contextual blending of evaluative judgments of in-/outgroup information and positive vs. negative valence association and confirm recent research relating in-/outgroup ERP modulation and frontal LPP. LPP modulation may cohere with implicit measures of attitudes. The convergence of measures that were observed supports the idea that racial and valence evaluations are strongly influenced by context. This result adds to a growing set of evidence concerning contextual sensitivity of different measures of prejudice.
  • Thumbnail Image
    Item
    Dynamics of simultaneous and imitative bodily coordination in trust and distrust
    (2018) Cornejo Alarcón, Carlos; Hurtado León, Esteban Andrés; Cuadros Parada, Ivette Zamara; Torres Araneda, Alejandra; Paredes Mayor, Javiera Andrea; Olivares, Himmbler; Carré, David; Robledo, Juan P.
  • Thumbnail Image
    Item
    Facial and semantic emotional interference: A pilot study on the behavioral and cortical responses to the dual valence association task
    (2011) Hurtado León, Esteban Andrés; Ibáñez, Agustín; Riveros Miranda, Rodrigo Andrés; Urquina, Hugo.; Cardona, Juan F.; Petroni, Agustín.; Lobos-Infante, Alejandro.; Barutta, Joaquin.; Baez, Sandra.; Manes, Facundo.
    Abstract Background Integration of compatible or incompatible emotional valence and semantic information is an essential aspect of complex social interactions. A modified version of the Implicit Association Test (IAT) called Dual Valence Association Task (DVAT) was designed in order to measure conflict resolution processing from compatibility/incompatibly of semantic and facial valence. The DVAT involves two emotional valence evaluative tasks which elicits two forms of emotional compatible/incompatible associations (facial and semantic). Methods Behavioural measures and Event Related Potentials were recorded while participants performed the DVAT. Results Behavioural data showed a robust effect that distinguished compatible/incompatible tasks. The effects of valence and contextual association (between facial and semantic stimuli) showed early discrimination in N170 of faces. The LPP component was modulated by the compatibility of the DVAT. Conclusions Results suggest that DVAT is a robust paradigm for studying the emotional interference effect in the processing of simultaneous information from semantic and facial stimuli.Abstract Background Integration of compatible or incompatible emotional valence and semantic information is an essential aspect of complex social interactions. A modified version of the Implicit Association Test (IAT) called Dual Valence Association Task (DVAT) was designed in order to measure conflict resolution processing from compatibility/incompatibly of semantic and facial valence. The DVAT involves two emotional valence evaluative tasks which elicits two forms of emotional compatible/incompatible associations (facial and semantic). Methods Behavioural measures and Event Related Potentials were recorded while participants performed the DVAT. Results Behavioural data showed a robust effect that distinguished compatible/incompatible tasks. The effects of valence and contextual association (between facial and semantic stimuli) showed early discrimination in N170 of faces. The LPP component was modulated by the compatibility of the DVAT. Conclusions Results suggest that DVAT is a robust paradigm for studying the emotional interference effect in the processing of simultaneous information from semantic and facial stimuli.Abstract Background Integration of compatible or incompatible emotional valence and semantic information is an essential aspect of complex social interactions. A modified version of the Implicit Association Test (IAT) called Dual Valence Association Task (DVAT) was designed in order to measure conflict resolution processing from compatibility/incompatibly of semantic and facial valence. The DVAT involves two emotional valence evaluative tasks which elicits two forms of emotional compatible/incompatible associations (facial and semantic). Methods Behavioural measures and Event Related Potentials were recorded while participants performed the DVAT. Results Behavioural data showed a robust effect that distinguished compatible/incompatible tasks. The effects of valence and contextual association (between facial and semantic stimuli) showed early discrimination in N170 of faces. The LPP component was modulated by the compatibility of the DVAT. Conclusions Results suggest that DVAT is a robust paradigm for studying the emotional interference effect in the processing of simultaneous information from semantic and facial stimuli.
  • No Thumbnail Available
    Item
    Infant-adult synchrony in spontaneous and nonspontaneous interactions
    (2020) Cuadros Parada, Ivette Zamara; Hurtado León, Esteban Andrés; Cornejo Alarcón, Carlos
  • Thumbnail Image
    Item
    Measuring Dynamics of Infant-Adult Synchrony Through Mocap
    (2019) Cuadros Parada, Ivette Zamara; Hurtado León, Esteban Andrés; Cornejo Alarcón, Carlos
  • Thumbnail Image
    Item
    Motor-language coupling : direct evidence from early Parkinson's disease and intracranial cortical recordings
    (2013) Ibáñez, Agustín; Cardona, Juan F.; Vidal Dos Santos, Yamil; Blenkmann, Alejandro; Aravena, Pía; Roca, María; Hurtado León, Esteban Andrés; Nerguizian, Mirna; Amoruso, Lucía; Gómez-Arévalo, Gonzalo et al.
  • Thumbnail Image
    Item
    Multi-level analysis of cultural phenomena: The role of ERPs approach to prejudice
    (2009) Ibáñez, Agustín; Haye M., Andrés; González Rial, Ramiro Germán; Hurtado León, Esteban Andrés; Henríquez-Ch, Rodrigo A.
    Brain processes and social processes are not as separated as many of our Social Psychology and Neuroscience departments. This paper discusses the potential contribution of social neuroscience to the development of a multi-level, dynamic, and context-sensitive approach to prejudice. Specifically, the authors review research on event related potentials during social bias, stereotypes, and social attitudes measurements, showing that electrophysiological methods are powerful tools for analyzing the temporal fine-dynamics of psychological processes involved in implicit and explicit prejudice. Meta-theoretical implications are drawn regarding the social psychological modeling of social attitudes, and for the integration of social neuroscience into a multi-level account of cultural behavior.
  • Thumbnail Image
    Item
    Music intervals in speech : Psychological disposition modulates ratio precision among interlocutors' nonlocal f0 production in real-time dyadic conversation
    (2016) Robledo, Juan P.; Hurtado León, Esteban Andrés; Prado, Felipe; Román Montes de Oca, Domingo; Cornejo Alarcón, Carlos
  • Thumbnail Image
    Item
    The Dynamics of Implicit Intergroup Biases of Victims and Ex-combatants in Post-conflict Scenarios
    (2020) Baez, S.; Trujillo, N.; Hurtado León, Esteban Andrés; Ortiz Ayala, A.; Rodríguez Calvache, M.; Quishpe, R. C.; Ibáñez A.
  • Thumbnail Image
    Item
    Time to Tango: Expertise and contextual anticipation during action observation
    (2014) Amoruso, L.; Sedeno, L.; Huepe Artigas, David; Tomio, A.; Kamienkowski, J.; Hurtado León, Esteban Andrés; Cardona, J.; Álvarez González, M.