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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If aged rats have an impaired sense of time of day, then with a hippocampal lesion they should not express learned saline aversions that are modulated by the time of day the saline was tasted. Similarly, other studies showing a context specificity of learned taste aversions have used several conditioning trials Puente et al.

Chemical Senses, 30 Suppl 1ii Beyond memory, navigation, and inhibition: Progress in Neurobiology, 69, Stone, M. It is proposed that taste learning and memory tasks may assist in understanding the ageing of memory systems, giving access to a more complete picture. 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.

No other differences were significant. Immediately, after the 15 min of saline drinking, all the animals received an i. The results may therefore also be interpreted as a moderate aging-related deficit of latent inhibition with hippocampal lesion causing an even more severe deficit.



Learning and Memory, 7, Arias, C. In phase 2 the experimental groups received an intraperitoneal injection of lithium chloride. However, with the behavioral procedure used, aged rats exhibited an enhancement of basic taste aversion that is not induced by hippocampal lesions in young adult rats. Journal of Neuroscience, 25 9. Sal Pre-Diff am and pm am: Hippocampus, 16, Kesner, R.

Neurobiology of Learning and Memory, 82 Bulletin of the History of Medicine. Rudy reported context-specific LI in day-old rats, while Zuckerman, Rimmerman, and Avetsivo showed that day-old rats exhibited LI resistant to a context shift between preexposure and conditioning.

Ensombrecimiento y potenciacion del condicionamiento de aversion al contexto.

Water intake was also similar during the recovery phase data not shownsuggesting that the aversive effect of the US was also similar across the groups. Experimental and neurobiological aversibo of latent inhibition in taste aversion learning paradigm.

Memory, amnesia, and the hippocampal system. Behavioral Neuroscience, 99 3Spear, L. El Abuelo del Poeta: In phase 1 all groups were exposed to free food access and each group to a different solution: Impact of aging on hippocampal function: The volume of consumed saline was compared across groups and across days.

Conclusions Taste recognition memory may be proposed as a choice model for the study of the ageing impact on memory.

The time of day was counterbalanced, i. Motivational differences between old and young adult rats have been stressed as a major point of concern in ageing studies using the water maze task as poorer thermoregulation of aged rats may affect either the motivation to escape from the water or the emotional reactivity to the Of Animals and Men: Ibotenate lesions of the hippocampus enhance latent inhibition in conditioned taste aversion and increase resistance to extinction in conditioned taste preference.

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Both enhanced and preserved functions besides those deteriorated represent useful tools to study the ageing brain Hippocampus and taste memories The basic brain circuit required for CTA involves several brain areas, such as the nucleus of the solitary tract, the parabrachial nucleus, the insular gustatory cortex, and the amygdala for reviews see Bernstein, ; Gallo et al. Exposure to the CS was similar across the groups because saline intake was not different between the groups in the conditioning session.

Both aged and hippocampal adult rats show an intact LI effect. Groups that received saline instead of LiCl were not included because prior work indicated that exposure to saline at a novel or familiar time of day did not differentially alter subsequent saline intake Manrique et al.

Dissociation of proximal -and distal -cue-based behaviours.

Moreover, studies on conditioned emotional response CER provide conflicting results. Animales al Borde de un Ataque de Nervios: Physiological Research, 51 Suppl 1, S S Hippocampal map realignment and spatial learning. Neuroscience, 5 3. Opening the iTunes Store.