Bergado, J.A., Almaguer-Melian, W., Kostenko, S., Frey, S., Frey, J.U. (2003): Behavioral reinforcement of long-term potentiation in rat dentate gyrus in vivo is protein synthesis-dependent. Neurosci Lett . 351(1), pp. 56-58.

Straube, T., Korz, V. and Frey, J. U. (2003): Bidirectional modulation of LTP by novelty-exploration in rat dentate gyrus. Neurosci. Lett. 344(1), pp. 5-8.

Korz, V. and Frey, J.U. (2003): Stress-related modulation of hippocampal long-term potentiation in rats: involvement of glucocorticoid receptors. J. Neurosci. 23(19), pp. 7281-7287.

Leutgeb, J., Frey, J. U. and Behnisch,T.,: LTP in cultured hippocampal-entorhinal cortex slices from young adult (P25-30) rats. J. Neurosci. Meth. (2003) in press .

Balschun, D., Wolfer, D., Gass, P., Mantamadiotis, T., Welzl, H., Schütz, G., Frey, J.U. and Lipp, H.-P., (2003): Does cAMP response element-binding protein have a pivotal role in hippocampal synaptic plasticity and hippocampus-dependent memory? J. Neurosci. 23(15), pp. 6304-6314.

Altrock, W.D., tom Dieck, S., Sokolov, M., Meyer, A.C., Sigler, A., Brakebusch, C., Fässler, R., Richter, K., Boeckers, T.M., Potschka, H., Brandt, C., Löcher, W., Grimberg, D., Dresbach, T., Hempelmann, A., Hassan, H., Balschun, D., Frey, J. U., Brandstätter, J.H., Garner, C.C., Rosenmund, C., Gundelfinger, E.D. (2003): Functional inactivation of a fraction of excitatory synapses in mice deficient for the active zone protein Bassoon. Neuron 37(5), pp. 787-800.

Sajikumar, S. and Frey, J. U. (2003): Anisomycin inhibits the late maintenance of long-term depression in rat hippocampal slices in vitro. Neurosci. Lett. 338(2), pp. 147-150.

Ahmed, T. and Frey, J. U. (2003): Expression of the specific type IV phophodiesterase gene PDE4B3 during different phases of LTP in single hippocampal slices of rats in vitro. Neuroscience 117, pp. 627 - 638.

Frey, S., Bergado, J. A. and Frey, J. U. (2003): Modulation of late phases of long-term potentiation in rat dentate gyrus by stimulation of the medial septum. Neuroscience 118(4), pp. 1055-1062.

Almaguer-Melian, W., Martinez-Marti, L., Frey, J. U. and Bergado, J. A., (2003): The amygdala is part of the behavioral reinforcement system required for LTP in rat hippocampus. Neuroscience 119(2), pp. 319-322.

Straube, T., Korz, V., Balschun, D., Frey, J. U., (2003): Requirement of ß-adrenergic receptor activation and protein synthesis for LTP-reinforcement by novelty in rat dentate gyrus. J. Physiol. (Lond.) 552.3, pp. 953-960.

Straube, T. and Frey, J. U., (2003): Time-dependent depotentiation in the dentate gyrus of freely moving rats by repeated brief 7 Hz stimulation. Neuros ci. Lett. 339(1), pp. 82-84.

Straube, T. and Frey, J. U., (2003): Involvement of ß-adrenergic receptors in protein synthesis-dependent late-LTP in the dentate gyrus of freely moving rats: the critical role of the LTP induction strength. Neuroscience 119(2), pp. 473-479.

Frey, J. U. (2002): The consolidation of hippocampal plasticity: associative, heterosynaptic and intracellular requirements. Restorative Neurol. and Neurosci. 20, p. 62.

Sokolov, M.V, Rassokhin, AV., Astrelin, A.V., Frey, J.U. and Voronin, L.L. (2002): Quantal analysis strongly suggests a presynaptic involvement during the initial maintenance of long-term potentiation in rat hippocampal CA1 in vitro. Brain Res. 957, pp. 61-75.

Almaguer, W., Estupiñán, B., Frey, J.U, Bergado, J.A. (2002): Aging impairs amygdala-hippocampus interactions involved in hippocampal LTP. Neurobiol. Aging 23, pp. 319-324.

Bergado J.A., Almaguer W., Ravelo, J., Rosilo J.C., Frey, J.U. (2001): Behavioral reinforcement of long-term potentiation is impaired in aged rats with cognitive deficiencies. Neuroscience 108, pp. 1-5.

Frey, S., Bergado-Rosado, J., Seidenbecher, Th., Pape, H.-C. and Frey, J. U. (2001): Reinforcement of early long-term potentiation (Early-LTP) in dentate gyrus by stimulation of the basolateral amygdala: Heterosynaptic induction mechanisms of late-LTP. J. Neurosci. 21, pp. 3697-3703.

Frey, J. U. (2001): Long-lasting hippocampal plasticity: Cellular model for memory consolidation? In: Results and Problems in Cell Differentiation , Vol. 34, Cell polarity and subcellular RNA localization. ed.: D. Richter, Springer-Verlag Berlin Heidelberg , pp. 27-40.

Jas, J., Almaguer, W., Frey, J. U. and Bergado, J. (2000): Lesioning the fimbria-fornix impairs basolateral amygdala-induced reinforcement of LTP in the dentate gyrus. Brain Res. 861, pp. 186-189.

Kulla, A., and Manahan-Vaughan, D. (2000): Depotentiation in the dentate gyrus of freely moving rats is modulated by D1/D5 dopamine receptors. Cereb Cortex 10, pp. 614-20.

Manahan-Vaughan, D., Kulla, A. and Frey, J. U. (2000): Requirement of translation but not transcription for the maintenance of long-term depression in the CA1 region of freely moving rats. J. Neurosci. 20, pp. 8572-76.

Balschun, D., Wolfer, D.P., Bertocchini, F., Barone, V., Conti, A., Zuschratter, W., Missiaen, L., Lipp, H.-P., Frey, J. U. and Sorrentino, V. (1999): Deletion Of The Ryanodine Receptor Type 3 (RyR3) Impairs Forms Of Synaptic Plasticity And Spatial Learning. EMBO J. 18, pp. 5264-5273

Morris, R.G.M. and Frey, U. (1999): Tagging the Hebb synapse. TINS 22, pp. 255-256

Morris, R.G.M. and Frey, U. (1999): Hippocampal synaptic plasticity: role in spatial learning or the automatic recording of attended experience. In: The Hippocampal And Parietal Foundations Of Spatial Cognition . (ed. N. Burgess, K.J. Jeffrey, J. O'Keefe) Oxford Univ. Press Oxford , New York , Tokyo , pp. 220-24.

Frey, U. and Morris, R.G.M. (1998): Synaptic tagging: implications for late-maintenance of hippocampal long-term potentiation. TINS 21, pp. 181-188.

Frey, U. and Morris, R.G.M. (1998): Weak before strong: dissociating synaptic tagging and plasticity-factor accounts of late-LTP. Neuropharmacol. 37, pp. 545-552.

Gass, P., Wolfer, D.P., Balschun, D., Rudolph, D., Frey, U., Lipp, H.-P. and Schütz, G. (1998): Deficits in memory tasks of mice with CREB mutations depend on gene dosage. Learn. & Memory 5, pp. 274-288.