Manuel M. Ramos Alvarez
University of Jaén
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Publication
Featured researches published by Manuel M. Ramos Alvarez.
The Journal of Neuroscience | 2012
Melissa E. Wang; Ellen G. Wann; Robin K. Yuan; Manuel M. Ramos Alvarez; Squire M. Stead; Isabel A. Muzzio
Fear is an emotional response to danger that is highly conserved throughout evolution because it is critical for survival. Accordingly, episodic memory for fearful locations is widely studied using contextual fear conditioning, a hippocampus-dependent task (Kim and Fanselow, 1992; Phillips and LeDoux, 1992). The hippocampus has been implicated in episodic emotional memory and is thought to integrate emotional stimuli within a spatial framework. Physiological evidence supporting the role of the hippocampus in contextual fear indicates that pyramidal cells in this region, which fire in specific locations as an animal moves through an environment, shift their preferred firing locations shortly after the presentation of an aversive stimulus (Moita et al., 2004). However, the long-term physiological mechanisms through which emotional memories are encoded by the hippocampus are unknown. Here we show that during and directly after a fearful experience, new hippocampal representations are established and persist in the long term. We recorded from the same place cells in mouse hippocampal area CA1 over several days during predator odor contextual fear conditioning and found that a subset of cells changed their preferred firing locations in response to the fearful stimulus. Furthermore, the newly formed representations of the fearful context stabilized in the long term. Our results demonstrate that place cells respond to the presence of an aversive stimulus, modify their firing patterns during emotional learning, and stabilize a long-term spatial representation in response to a fearful encounter. The persistent nature of these representations may contribute to the enduring quality of emotional memories.
The Journal of Neuroscience | 2015
Melissa E. Wang; Robin K. Yuan; Alexander T. Keinath; Manuel M. Ramos Alvarez; Isabel A. Muzzio
The extinction of learned fear is a hippocampus-dependent process thought to embody new learning rather than erasure of the original fear memory, although it is unknown how these competing contextual memories are represented in the hippocampus. We previously demonstrated that contextual fear conditioning results in hippocampal place cell remapping and long-term stabilization of novel representations. Here we report that extinction learning also induces place cell remapping in C57BL/6 mice. Specifically, we observed cells that preferentially remapped during different stages of learning. While some cells remapped in both fear conditioning and extinction, others responded predominantly during extinction, which may serve to modify previous representations as well as encode new safe associations. Additionally, we found cells that remapped primarily during fear conditioning, which could facilitate reacquisition of the original fear association. Moreover, we also observed cells that were stable throughout learning, which may serve to encode the static aspects of the environment. The short-term remapping observed during extinction was not found in animals that did not undergo fear conditioning, or when extinction was conducted outside of the conditioning context. Finally, conditioning and extinction produced an increase in spike phase locking to the theta and gamma frequencies. However, the degree of remapping seen during conditioning and extinction only correlated with gamma synchronization. Our results suggest that the extinction learning is a complex process that involves both modification of pre-existing memories and formation of new ones, and these traces coexist within the same hippocampal representation.
European Physical Education Review | 2010
Emilio J. Martínez-López; María Luisa Zagalaz Sánchez; Manuel M. Ramos Alvarez; Manuel Jesús de la Torre Cruz
This study is about the relation between self-efficacy expectations and the attitude towards child and youth obesity, as well as the role of the school in this matter. A questionnaire was given to a sample of 436 trainee physical education teachers from eight universities in Andalusia (Spain). The questionnaire was a version of Teaching Self-Efficacy in Higher Education (Prieto, 2007) and of Perceptions of Youth Obesity among Physical Educators (Greenleaf and Weiller, 2005). The results indicated that those trainees who possessed a higher level of perceived self-efficacy for the assessment of not only their own teaching, but also of the knowledge acquired by overweight students and of school intervention in their learning process, tended to show more favourable attitudes towards the educational treatment of child and youth obesity, and towards obese students’ fitness and healthcare. The trainees with a perceived higher level of self-efficacy for the assessment of the progress made by overweight students and with a more favourable disposition towards revising their teaching practice tended to show a more negative attitude towards obese people.
International journal of psychology and psychological therapy | 2006
Juan M. Rosas; José Enrique Callejas Aguilera; Manuel M. Ramos Alvarez; María J. F. Abad
Archive | 2003
Andrés Catena Martínez; Humberto Manuel Trujillo Mendoza; Manuel M. Ramos Alvarez
Archive | 2009
Antonio Pantoja Vallejo; Beatriz Sierra y Arizmendiarrieta; Miguel Pérez Ferra; David Molero López-Barajas; Juan Carlos Tójar Hurtado; Antonio Matas Terrón; María Isabel Sancho Rodríguez; Marlene Zwierewicz; Roberto Moraes Cruz; Manuel M. Ramos Alvarez; Luis Manuel Lozano Fernández; Emilia Inmaculada de la Fuente Solana; Elda Gomes Araújo; Eugenia Gil García; José Navarrete Cortés; Juan Antonio Gil Pascual; María Luisa Zagalaz Sánchez; Tomás J. Campoy Aranda
Investigación en psicología, Vol. 1, 2007 (Investigación sobre procesos psicológicos), ISBN 978-84-8439-324-5, págs. 105-140 | 2007
Manuel M. Ramos Alvarez; Andrés Catena Martínez
International journal of psychology and psychological therapy | 2017
Pedro M. Ogallar; Manuel M. Ramos Alvarez; José A. Alcalá; María Manuela Moreno Fernández; Juan M. Rosas
Revista De Educacion | 2016
Gloria Luque Agulló; María Camino Bueno Alastuey; Manuel M. Ramos Alvarez
Proyectos de investigación, 2006-07 [Recurso electrónico], 2009, ISBN 978-84-8439-458-7, págs. 72-91 | 2009
Manuel M. Ramos Alvarez; Juan Manuel Rosas Santos; José Enrique Callejas Aguilera; María J. F. Abad; María Manuela Moreno Fernández; Samuel P. León; Concepción Paredes-Olay