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The morphology of electrophysiologically identified neurons was examined in the primary auditory cortex (AI) of the cat. After stimulation of the medial geniculate nucleus (MG), second auditory cortex, posterior ectosylvian gyrus, contralateral AI, or corpus callosum, intracellular potentials were recorded from AI neurons, which were then injected(More)
This study demonstrates that the laterodorsal tegmental nucleus (LDT) and pedunculopontine tegmental nucleus (PPT) are sources of cholinergic projections to the cat pontine reticular formation gigantocellular tegmental field (PFTG). Neurons of the LDT and PPT were double-labeled utilizing choline acetyltransferase immunohistochemistry combined with(More)
A retrograde and anterograde wheat germ agglutinated horseradish peroxidase WGA-HRP study in the cat indicated that some neurons in the dorsal column nuclei and the interpolar and caudal spinal trigeminal nuclei send fibers to the dorsal and ventral cochlear nuclei; to the pyramidal cell layer of the dorsal cochlear nucleus and to the cochlear granule cell(More)
Electrical stimulation of the primary auditory cortex (AI) of the cat was found to evoke EPSPs, IPSPs or EPSP-IPSP sequences in colliculogeniculate (CG) neurons in the inferior colliculus (IC) which responded antidromically to stimulation of the medial geniculate nucleus. The CG neurons responding to the AI stimulation with short-latency EPSPs (1.0-1.4(More)
The trajectories and the cells of origin of the pontobulbar gigantocellular tegmental field descending pathways were studied in the cat using anterograde WGA-HRP and retrograde HRP techniques. Four main descending pathways and cells of origin were delineated: (1) Predominantly large neurons in the pontine gigantocellular tegmental field (average soma(More)
We examined influences of a blocker (glibenclamide) and an opener (nicorandil) of the ATP-sensitive potassium (KATP) channel on extracellular K concentration [( K+]e), as well as the myocardial function and metabolites during global ischemia and reperfusion in Langendorff-perfused rat heart preparation. In control hearts, [K+]e began to rise 20 s after the(More)
We examined the effect of transient forebrain ischemia of 2-, 3-, 4- and 5-min duration on the development of delayed neuronal death in field CA1 of the hippocampus in the gerbil whose brain temperature was maintained at 37 degrees C. Transient ischemia of 3- and 4-min duration caused almost the same maximal damage in field CA1 as observed in the gerbils(More)
After injecting horseradish peroxidase into the hypoglossal nucleus, labeled neuronal cell bodies were constantly seen bilaterally with a slight ipsilateral dominance in the parvocellular reticular formation and reticular regions around the hypoglossal nucleus, ipsilaterally in the nucleus of Kölliker-Fuse, and contralaterally within the hypoglossal(More)
Osteoclast differentiation factor (ODF), a recently identified cytokine of the TNF family, is expressed as a membrane-associated protein in osteoblasts and stromal cells. ODF stimulates the differentiation of osteoclast precursors into osteoclasts in the presence of M-CSF. Here we investigated the effects of LPS on the gene expression of ODF in mouse(More)
Neuronal connections in the primary auditory cortex (AI) of the cat were studied electrophysiologically by using intracellular recording techniques. Fast-conducting fibers from the medial geniculate nucleus (MG) projected monosynaptically onto AI neurons in layers III-VI (mainly in layer IV), whereas slow-conducting MG-fibers projected monosynaptically onto(More)