@article{MTMT:2086368, title = {Anti-Hebbian long-term potentiation in the hippocampal feedback inhibitory circuit.}, url = {https://m2.mtmt.hu/api/publication/2086368}, author = {Lamsa, Karri and Heeroma, JH and Somogyi, Péter Pál and Rusakov, DA and Kullmann, DM}, doi = {10.1126/science.1137450}, journal-iso = {SCIENCE}, journal = {SCIENCE}, volume = {315}, unique-id = {2086368}, issn = {0036-8075}, abstract = {Long-term potentiation (LTP), which approximates Hebb's postulate of associative learning, typically requires depolarization-dependent glutamate receptors of the NMDA (N-methyl-D-aspartate) subtype. However, in some neurons, LTP depends instead on calcium-permeable AMPA-type receptors. This is paradoxical because intracellular polyamines block such receptors during depolarization. We report that LTP at synapses on hippocampal interneurons mediating feedback inhibition is "anti-Hebbian":Itis induced by presynaptic activity but prevented by postsynaptic depolarization. Anti-Hebbian LTP may occur in interneurons that are silent during periods of intense pyramidal cell firing, such as sharp waves, and lead to their altered activation during theta activity.}, keywords = {Animals; Male; RATS; Hippocampus/cytology/*physiology; Electric Stimulation; Neural Inhibition/*physiology; Pyramidal Cells/*physiology; Rats, Sprague-Dawley; Membrane Potentials; Excitatory Postsynaptic Potentials; Synapses/*physiology; Patch-Clamp Techniques; Interneurons/*physiology; *Long-Term Potentiation; Receptors, N-Methyl-D-Aspartate/physiology; Spermine/analogs & derivatives/pharmacology; Receptors, AMPA/physiology}, year = {2007}, eissn = {1095-9203}, pages = {1262-1266}, orcid-numbers = {Lamsa, Karri/0000-0002-4609-1337} } @article{MTMT:3322306, title = {Expression pattern of voltage-dependent calcium channel subunits in hippocampal inhibitory neurons in mice}, url = {https://m2.mtmt.hu/api/publication/3322306}, author = {Vinet, J and Sík, Attila}, doi = {10.1016/j.neuroscience.2006.07.019}, journal-iso = {NEUROSCIENCE}, journal = {NEUROSCIENCE}, volume = {143}, unique-id = {3322306}, issn = {0306-4522}, year = {2006}, eissn = {1873-7544}, pages = {189-212} } @article{MTMT:109502, title = {Distance-dependent scaling of calcium transients evoked by backpropagating spikes and synaptic activity in dendrites of hippocampal interneurons}, url = {https://m2.mtmt.hu/api/publication/109502}, author = {Rózsa J., Balázs and Zelles, Tibor and Vizi, E. Szilveszter and Lendvai, Balázs}, doi = {10.1523/JNEUROSCI.3906-03.2004}, journal-iso = {J NEUROSCI}, journal = {JOURNAL OF NEUROSCIENCE}, volume = {24}, unique-id = {109502}, issn = {0270-6474}, year = {2004}, eissn = {1529-2401}, pages = {661-670}, orcid-numbers = {Zelles, Tibor/0000-0002-0357-0469; Vizi, E. Szilveszter/0000-0002-9557-4597} } @article{MTMT:1442916, title = {Ca2+ imaging of mouse neocortical interneurone dendrites: Ia-type K+ channels control action potential backpropagation.}, url = {https://m2.mtmt.hu/api/publication/1442916}, author = {Goldberg, JH and Tamás, Gábor and Yuste, R}, doi = {10.1113/jphysiol.2003.042580}, journal-iso = {J PHYSIOL-LONDON}, journal = {JOURNAL OF PHYSIOLOGY-LONDON}, volume = {551}, unique-id = {1442916}, issn = {0022-3751}, abstract = {GABAergic interneurones are essential in cortical processing, yet the functional properties of their dendrites are still poorly understood. In this first study, we combined two-photon calcium imaging with whole-cell recording and anatomical reconstructions to examine the calcium dynamics during action potential (AP) backpropagation in three types of V1 supragranular interneurones: parvalbumin-positive fast spikers (FS), calretinin-positive irregular spikers (IS), and adapting cells (AD). Somatically generated APs actively backpropagated into the dendritic tree and evoked instantaneous calcium accumulations. Although voltage-gated calcium channels were expressed throughout the dendritic arbor, calcium signals during backpropagation of both single APs and AP trains were restricted to proximal dendrites. This spatial control of AP backpropagation was mediated by Ia-type potassium currents and could be mitigated by by previous synaptic activity. Further, we observed supralinear summation of calcium signals in synaptically activated dendritic compartments. Together, these findings indicate that in interneurons, dendritic AP propagation is synaptically regulated. We propose that interneurones have a perisomatic and a distal dendritic functional compartment, with different integrative functions.}, keywords = {Animals; MICE; Excitatory Postsynaptic Potentials/physiology; Mice, Inbred C57BL; Synapses/physiology; electric conductivity; Action Potentials; Visual Cortex/cytology/metabolism; Potassium Channels/*physiology; Interneurons/classification/*metabolism; Dendrites/*metabolism/physiology; Calcium Channels/physiology; Calcium/*metabolism/physiology; Neocortex/cytology/*metabolism}, year = {2003}, eissn = {1469-7793}, pages = {49-65}, orcid-numbers = {Tamás, Gábor/0000-0002-7905-6001} } @article{MTMT:108777, title = {Perisynaptic location of metabotropic glutamate receptors mGluR5 on dendrites and dendritic spines in the rat hippocampus}, url = {https://m2.mtmt.hu/api/publication/108777}, author = {Luján, R and Nusser, Zoltán and Roberts, JDB and Shigemoto, R and Somogyi, Péter Pál}, doi = {10.1111/j.1460-9568.1996.tb01611.x}, journal-iso = {EUR J NEUROSCI}, journal = {EUROPEAN JOURNAL OF NEUROSCIENCE}, volume = {8}, unique-id = {108777}, issn = {0953-816X}, year = {1996}, eissn = {1460-9568}, pages = {1488-1500} }