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Mice devoid of glial fibrillary acidic protein (GFAP), an intermediate filament protein specifically expressed in astrocytes, develop normally and do not show any detectable abnormalities in the anatomy of the brain. In the cerebellum, excitatory synaptic transmission from parallel fibers (PFs) or climbing fibers (CFs) to Purkinje cells is unaltered, and these synapses display normal short-term synaptic...
To maintain neural functions in brain block preparations of the rat auditory cortex in vitro, a pressurized oxygenated medium was injected into the blocks. Distribution of indigo carmine contained in the injection medium indicated that a columnar region of 1-2 mm in diameter was homogeneously perfused from the white matter to the pial surface. Stimulation of cortical layers just above the white matter...
Of the six glutamate receptor (GIuR) channel subunit families identified by molecular cloning, five have been shown to constitute either the AMPA, kainate, or NMDA receptor channel, whereas the function of the δ subunit family remains unknown. The selective localization of the δ2 subunit of the GluRδ subfamily in cerebellar Purkinje cells prompted us to examine its possible physiological roles by...
We developed a sound discrimination test combined with a preparatory training procedure. After water deprivation of 48 h, rats were trained to respond to a sound with pedal-pressing to receive a reward of water. Six of the eight trained rats showed pedal-pressing responses to the sound within 4 h of training, and these six were exposed to two different sounds, response to only one of which was rewarded...
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