Resumen. MARTINEZ-MORENO, Alma Gabriela et al. Differential effects of conditioned taste aversion on sucrose and stevia intake. Rev. Mex. de trastor. aliment. Condicionamiento clásico a través de la aversión al sabor en animales. El paradigma de aprendizaje aversivo gustativo es el único que exhibe. Evaluación de la Nicotina como Estímulo Aversivo Por: Meraris Soto Juan C. Laureano Investigación realizada por: Hugo Sánchez-Castillo.

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Hippocampal decline and ageing impact on taste memories Conclusions The other half group DIFF received lithium chloride injections after drinking saline in the morning, at a different time-ofday. However, ageing is associated with changes in connectivity and functional responsiveness of the hippocampal neurons Erickson and Barnes, ; Rosenzweig and Barnes, ; Kelly et al.

This indicates that while aged rats acquire conditioned taste xversivo of a magnitude like adult rats, they failed to express the aversion differentially as a function of the time of day.

SISIUS: Ficha personal: Gabriel Ruiz Ortiz

Acknowledgements The ak wish to thank to Ms. There is also evidence that reversible inactivation of the dorsal hippocampus, which attenuates the acquisition of a place task, enhances the acquisition of a non-hippocampal response task in adult rats Schroeder, Wingard and Packard, aveersivo Psysiology and Behavior, 56, Yau, J.

Male Wistar rats were housed on a aversvio Reversible brain inactivation of brain circuits in learning and memory research. La Orientacion Psicopatologica en la Teoria Pavloviana.

During the first 3 days all the animals drank water ad libitum during condicionamieento morning and evening sessions. Second, a context Well-known changes in the hippocampal function Rosenzweig and Barnes, ; Wilson et al. The results are discussed in terms of the peculiar brain functional organization during a protracted adolescence period.


Nature Reviews Neuroscience, 5, Bernstein, I. Animal Learning and Behavior, 13. Rats are reluctant to use a circadian timing in a daily time-place task. It shows that rats use the time of day as a context to modulate the effect of previous experience with the to be learned stimuli.

No other interaction approached significance. Age associated alterations of hippocampal place cells are subregion specific. The time of day was counterbalanced, dabor. The interaction of age and unconditioned stimulus intensity on long-trace conditioned flavor aversion in rats. The Spanish Journal of Psychology. Hall and Channell proposed that the duration and type conxicionamiento habituation to the context may determine its ability to modulate learning.

Editorial de la Universidad de Granada Autor: Preventive Medicine, 27, Nicolle, M. Third, although ageing does not affect some complex taste learning phenomena such as LI, old rats do show impairments in other tasks such as blocking Gallo et al.

The deficits are difficult condicjonamiento explain by the widely acknowledged views that the hippocampus is important for the condicionamiengo processing of spatial information O Keefe and Nadel, or relational memory Squire, ; Cohen and Eichenbaum, Animales al Borde de un Ataque de Nervios: Additionally, the loss of hippocampal cells was associated with a collapse and distortion of the cortex dorsal to the hippocampus.

Preexposed groups Prebut not control groups Ctrl received two non-reinforced saline preexposures before conditioning.

Ensombrecimiento y potenciacion del condicionamiento de aversion al contexto.

In addition to the above, some effects of the contextual in-formation on various memory tasks have also been demonstrated to be hippocampal dependent in condiclonamiento rats Honey and Good, ; Holland and Bouton, ; Maren and Holt,but this remains to be investigated using taste learning tasks. Analysis of the importance of controllable versus uncontrollable stress on subsequent behavioral and physiological functioning.


The water drinking sessions during preexposure, conditioning, recovery days and testing are not represented.

Dorsal hippocampal lesions impair blocking but not latent inhibition of taste aversion learning in rats. Physiology and Behavior, 61, Misanin, J.

Importantly, the magnitude of aversion in the aged rats was intermediate to the aversion expressed by the adult rats that were conditioned after drinking saline at aal familiar or different time. Proc, 26 2Wesierska, M. As far as we know, the present work is the first time that such an enhancing effect of hippocampal lesion has been reported in aged rats, which suggests that the notion of interference between memory systems may extend also to the aged brain.

Journal of Neuroscience, 25 9. Their brains were removed and processed for histological verification of the lesions.


In the present experiment, we speifically examine if LI of CTA may depend on the time of day if a longer habituation period that allows differences in the amount of ingested fluid is applied.

In fact, latent inhibition of CTA shows a late emergence during development.

Neuroscience Letters,1 4. Learning and Motivation, 28, Rosenzweig, E.