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Université de Fribourg

Hippocampal lesion prevents spatial relational learning in adult Macaque monkeys

Lavenex, Pamela Banta ; Amaral, David G. ; Lavenex, Pierre

In: The Journal of Neuroscience, 2006, vol. 26(17), p. 4546-4558

The role of the hippocampus in spatial learning and memory has been extensively studied in rodents. Comparable studies in nonhuman primates, however, are few, and findings are often contradictory. This may be attributable to the failure to distinguish between allocentric and egocentric spatial representations in experimental designs. For this experiment, six adult monkeys received bilateral...

Université de Fribourg

mPer1 and mPer2 mutant mice show regular spatial and contextual learning in standardized tests for hippocampus-dependent learning

Zueger, M. ; Urani, A. ; Chourbaji, S. ; Zacher, C. ; Lipp, H. P. ; Albrecht, Urs ; Spanagel, R. ; Wolfer, D. P. ; Gass, P.

In: Journal of Neural Transmission, 2006, vol. 113(3), p. 347 - 356

Learning and memory, like most physiological processes, seem to be under the control of circadian rhythm. The recently cloned mPer1 and mPer2 genes play an important role in the regulation of the circadian rhythm. In this study, we tested mPer1 and mPer2 mutant mice in two different learning and memory paradigms, a water-maze place navigation task and contextual fear...