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Memories, aversive

A variety of brain structures seem to be essential for aversive memories. In the following, I will briefly introduce the hippocampus and amygdala involvement, without disregarding the importance, for instance, of the cerebellum for eye-blink conditioning (Thompson et al. 1997, 2000 Medina et al. 2002) and the insular cortex for conditioned taste aversion (e.g. Berman and Dudai 2001). [Pg.11]

The characterisation of memory-related genes and proteins belongs to the hot spots of current memory research (D Agata and Cavallaro 2002). Respective studies in the field of aversive memories employ different molecular biological methods including in situ hybridisation (Ressler et al. 2002), differential display (Huang et al. 1998), subtractive hybridisation (Stork et al. 2001) and DNA microarrays (Kida et al. 2002). Most critical for the correct interpretation... [Pg.17]

Another striking characteristic of aversive memories is their abiUty to reconsolidate on reactivation. By definition, memories should be insensitive to disruption, for instance by electroconvulsive shocks or drugs, once they have been consohdated. This is, in fact, the case as long as the treatments do not coincide with memory recall. Reactivation of a memory, however, makes it labile again because of reconsoUdation processes (Sara 2000 Nader 2003). Reconsolidation resembles consolidation in that similar cascades of molecular... [Pg.18]

As mentioned before, retrieval renders the consohdated memories labile again. It seems to depend on the test situation, whether this labile state is followed by reconsolidation or extinction of the aversive memory. Blockade of reconsohdation processes (e.g. by interrupting protein synthesis within the lateral amygdala), for instance, has led to extinction of the fear responses to the CS in an auditory fear-conditioning paradigm (Nader et al. 2000). [Pg.21]

Marsicano G, Wotjak CT, Azad SC, Bisogno T, Rammes G, Cascio MG, Hermann H, Tang J, Hofmann C, Zieglgansberger W, Di Marzo V, Lutz B (2002) The endogenous cannabinoid system controls extinction of aversive memories. Natme 418 530-534 McKeman R, Rosdahl T, Reynolds D, Sur C, Wafford K, Atack J (2000) Sedative but not anxiolytic properties of benzodiazepines are mediated by the GABA-A receptor alpha-1 subtype receptors. Nat Neurosci 3 587-592... [Pg.523]

Improve the aversive memory retrieval in rats conditioned in a T maze with appetitive and aversive events [Kumar et al. 1995]... [Pg.540]

Kumar KB, Nalini K, Karanth KS Effects of p-chlorophenylalamine induced depletion of brain serotonin on retrieval of appetitive and aversive memories. Indian J Exp Biol 33 837-840, 1995... [Pg.677]

It is true that people sometimes say they cannot remember their painful experiences but some people cannot stop remembering them, the curse of posttrauma tic stress disorder. The crucial factor in remembering appetites is probably the consequence of their free availability that I note above To remember them fully is to experience them and, possibly, to be drawn into the positively fed-back phase of their rewardingness. This creates an incentive for people to keep their aversive memories at a distance, perhaps entertaining them only in the form of factual correlates (Morley 1993). The inability to remember them may be like the inability to touch a sore similarly, the urge to remember them may be like the urge to touch a sore. The issue is not cognitive availability but motivation. [Pg.227]

Bures, J., Bermudez-Rattoni, F. and Yanamoto, T. (1998) Conditioned taste aversion memory of a special kind. Oxford University Press, Oxford. [Pg.346]

Lamprecht, IT and Dudai, Y. (1996) Transient expression of c-Fos in rat amygdala during training is required for encoding conditioned taste aversion memory. Learn Mem 3, 31-41. [Pg.346]

Lamprecht, R., Hazvi, S. and Dudai, Y. (1997) cAMP response element-binding protein in the amygdala is required for long-but not short-term conditioned taste aversion memory. J Neurosci 17, 8443-8450. [Pg.346]

Marsicano, G et al The Endogenous Cannabinoid System Controls Extinction of Aversive Memories Nature (2002) 418 pp. 530-534... [Pg.193]


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See also in sourсe #XX -- [ Pg.546 ]




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