Neuronal Diversity and Temporal Dynamics: The Unity of Hippocampal Circuit Operations
- T. Klausberger, P. Somogyi
- BiologyScience
- 4 July 2008
The spatiotemporal specializations in cortical circuits reveal that cellular diversity and temporal dynamics coemerged during evolution, providing a basis for cognitive behavior.
Brain-state- and cell-type-specific firing of hippocampal interneurons in vivo
- T. Klausberger, P. Magill, P. Somogyi
- BiologyNature
- 20 February 2003
It is reported that three distinct interneuron types—basket, axo-axonic and oriens–lacunosum-moleculare cells—visualized and defined by synaptic connectivity as well as by neurochemical markers, contribute differentially to theta and ripple oscillations in anaesthetized rats.
Defined types of cortical interneurone structure space and spike timing in the hippocampus
- P. Somogyi, T. Klausberger
- BiologyJournal of Physiology
- 2005
Roles for specific interneurone types are suggested in structuring the activity of pyramidal cells via their respective target domains, and accurately timing and synchronizingPyramidal cell discharge, rather than providing generalized inhibition.
Target-cell-specific facilitation and depression in neocortical circuits
- A. Reyes, R. Luján, A. Rozov, N. Burnashev, P. Somogyi, B. Sakmann
- BiologyNature Neuroscience
- 1 August 1998
The results imply that the balance of activation between two recurrent inhibitory pathways in the neocortex depends on the frequency of action potentials in pyramidal cells.
Glutamatergic synapses on oligodendrocyte precursor cells in the hippocampus
- D. Bergles, J. Roberts, P. Somogyi, C. Jahr
- BiologyNature
- 11 May 2000
It is reported that stimulation of excitatory axons in the hippocampus elicits inward currents in OPCs that are mediated by AMPA receptors, and electron microscopic analysis revealed that vesicle-filled axon terminals make synaptic junctions with the processes of O PCs in both the young and adult hippocampus.
Synchronization of neuronal activity in hippocampus by individual GABAergic interneurons
- S. Cobb, E. Buhl, K. Halasy, O. Paulsen, P. Somogyi
- BiologyNature
- 2 November 1995
It is demonstrated that individual GABAergic interneurons can effectively phase spontaneous firing and subthreshold oscillations in hippocampal pyramidal cells at 4–7 Hz, and this GABAergic mechanism is sufficient to synchronize the firing of pyramsidal cells.
Petilla terminology: nomenclature of features of GABAergic interneurons of the cerebral cortex
- G. Ascoli, L. Alonso-Nanclares, R. Yuste
- BiologyNature Reviews Neuroscience
- 1 July 2008
A representative group of researchers are convened to agree on a set of terms to describe the anatomical, physiological and molecular features of GABAergic interneurons of the cerebral cortex, and the resulting terminology might provide a stepping stone towards a future classification of these complex and heterogeneous cells.
Salient features of synaptic organisation in the cerebral cortex 1 Published on the World Wide Web on 3 March 1998. 1
- P. Somogyi, G. Tamás, R. Luján, E. Buhl
- BiologyBrain Research Reviews
- 1 May 1998
The hippocampal CA3 network: An in vivo intracellular labeling study
- X.‐G. Li, P. Somogyi, A. Ylinen, G. Buzsáki
- BiologyThe Journal of comparative neurology
- 8 January 1994
The concentrated distribution of the axon collaterals (“patches”) indicates that subpopulations of neurons may receive disproportionately denser innervation, whereas innervation in the rest of the target zones is rather sparse.
Diverse sources of hippocampal unitary inhibitory postsynaptic potentials and the number of synaptic release sites
- E. Buhl, K. Halasy, P. Somogyi
- BiologyNature
- 28 April 1994
Dual intracellular recordings from microscopically identified neurons in the hippocampus reveal that the synaptic terminals of three morphologically distinct types of interneuron act through GABAA receptors, indicating that these GABAergic interneurons serve distinct functions in the cortical network.
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