Jian-Gang Zhu

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Pyramidal neurons in layer 5 of the neocortex of the brain extend their axons and dendrites into all layers. They are also unusual in having both an axonal and a dendritic zone for the initiation of action potentials. Distal dendritic inputs, which normally appear greatly attenuated at the axon, must cross a high threshold at the dendritic initiation zone(More)
1. Double, triple and quadruple whole-cell voltage recordings were made simultaneously from different parts of the apical dendritic arbor and the soma of adult layer 5 (L5) pyramidal neurons. We investigated the membrane mechanisms that support the conduction of dendritic action potentials (APs) between the dendritic and axonal AP initiation zones and their(More)
  • J J Zhu
  • The Journal of physiology
  • 2000
Changes in the arborization and electrical excitability of the apical dendritic tufts of pyramidal cells of cortical layer 5 were examined during the first 2 months (postnatal days (P)2-56) of postnatal development in rats. Reconstructions of biocytin-filled neurons showed that the apical dendritic trunk was continually growing, becoming longer and thicker(More)
We present an experimental model system that enables quantitative assessment of intergranular exchange coupling in CoCrPt-oxide perpendicular magnetic recording media. A thin film structure consisting of a high coercivity CoPt unicrystal layer and a lower coercivity CoPt layer separated by a thin oxide interlayer is used to model perpendicularly magnetized(More)
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Time reversal method was first developed in acoustic wave propagation [1]. It has been demonstrated that in an environment where multi-scattering-path dominates, focusing of acoustic wave with super resolution can be achieved using time reversal method [1][2]. Recent experiments have shown that the super resolution focusing effect in acoustic wave(More)
* Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213. email: stancil@cmu.edu, tel.: 412-268-3607, fax: 412-268-6087. † Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213 Abstract − Super-resolution focusing and nulling experiments are described based on(More)
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