Physiological and morphological identification of a nonpyramidal hippocampal cell type
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Cited by (227)
High frequency stimulation of the infralimbic cortex induces morphological changes in rat hippocampal neurons
2017, Brain StimulationCitation Excerpt :Structurally, both the stratum radiatum and stratum oriens layers in the CA1 hippocampal subregion are heavily innervated by axons within the Schaffer Collateral (SC) and Associational Commissural (AC) pathways, which constitute the major inputs to CA1 from the ipsilateral and contralateral CA3, respectively. In addition, the stratum oriens contains interneurons which receive collaterals from CA1 pyramidal neurons, and in turn modulate the activity of other CA1 pyramidal neurons [120–123]. In the CA1 subfield, BDNF administration leads to increased length of apical dendrites, and this appears to be localized specifically to the CA1 stratum radiatum [124].
Hippocampal Formation
2015, The Rat Nervous System: Fourth EditionMembrane Potential and Action Potential
2014, From Molecules to Networks: An Introduction to Cellular and Molecular Neuroscience: Third EditionPeroxynitrite alters GABAergic synaptic transmission in immature rat hippocampal slices
2013, Neuroscience ResearchCitation Excerpt :Interneurons located within the SO of area CA1 were distinguishable on visual inspection exhibiting round or fusiform cell bodies, horizontal dendrites (Fig. 5A) and their electrophysiological properties as described previously (Lacaille et al., 1987; Yan et al., 2009). Several electrophysiological criteria were used to identify interneurons, including the response to depolarizing current injections, the observation of short-duration and fast spike action potentials followed by large afterhyperpolarizing potentials (AHPs) (Schwartzkroin and Mathers, 1978), which were significant different from pyramidal neurons (Fig. 5B). In our experimental condition, in which AP-5 and CNQX were applied to block ionotropic glutamate receptors, spontaneous action potentials (sAP) were recorded in interneurons (some interneurons did not display sAP firing and the data was not involved).
Neonatal administration of phencyclidine decreases the number of putative inhibitory interneurons and increases neural excitability to auditory paired clicks in the hippocampal CA3 region of freely moving adult mice
2012, NeuroscienceCitation Excerpt :The fast-spiking non-pyramidal neurons fired at a higher rate and displayed shorter spike width than the pyramidal neurons (Schwartzkroin and Mathers, 1978; Kawaguchi and Hama, 1987a; Buckmaster and Schwartzkroin, 1995; Sik et al., 1995). Furthermore, the pyramidal neurons are distributed in the stratum pyramidale, and the fast-spiking non-pyramidal neurons are mainly distributed in the stratum pyramidale and oriens (Schwartzkroin and Mathers, 1978; Kawaguchi and Hama, 1987a,b), where approximately 80% of neurons were recorded in the current study. In contrast, the other type of non-pyramidal neurons in the hippocampus (non-fast spiking type) is exclusively located at the boundary between the stratum radiatum and lacunosum-moleculare (Kawaguchi and Hama, 1987b).
Biocytin-labelling and its impact on late 20th century studies of cortical circuitry
2011, Brain Research ReviewsCitation Excerpt :This limitation was particularly acute with dual intracellular recordings of synaptically connected cells when it became apparent that not all classes of synapse behaved in the same way (e.g. Thomson and West, 1993; Thomson et al., 1993a,b); synapse class being defined by both neurones, pre- and postsynaptic. One lab valiantly pioneered dual recordings in the hippocampus (Schwartzkroin and Mathers, 1978; Knowles and Schwartzkroin, 1981, Schwartzkroin and Kunkel, 1985; Scharfman et al., 1990) with intracellular HRP or lucifer yellow labelling (Lacaille et al., 1987), but the technical difficulties prevented many from following suit until Armstrong and colleagues developed the biocytin technique. We take the opportunity that this retrospective essay gives us to tell the story of how Armstrong and Horikawa discovered and developed what has become a fundamental tool right across the neuroscience spectrum.