1,721,009 research outputs found
Glocal Melville
No full textNumero monografico della rivista "Acoma" interamente dedicato all'opera di Herman Melville, studiata in un'ottica comparativa, transnazionale e globale
Translating America. Importing, Translating, Misrepresenting, Mythicizing, Communicating America. Proceedings of the XX Aisna Conference
No full textImmunocytochemical and microiontophoretic evidences that glutamate is involved in the monosynaptic excitatory input from pontine tegmentum to substantia nigra pars compacta
No full textFocussing and regulatory action of the dopaminergic nigrostriatal pathway on corticostriatal transmission
No full textShort-latency excitation of hindlimb motoneurons induced by electrical stimulation of the pontine tegmentum in the rat
No full textChemical signalling in the substantia nigra: the glutamatergic input from the pontine tegmentum and effects of non-NMDA antagonists
No full textShort-latency excitation of hindlimb motoneurons induced by electrical stimulation of the pontomesencephalic tegmentum in the rat
No full textThe monosynaptic reflex response evoked by stimulating the dorsal root L6 was greatly facilitated when a low intensity conditioning stimulus was applied to the pontomesencephalic tegmentum (PT) 1-2 ms in advance. When increasing the stimulus strength or the number of stimuli, motor discharges were recorded in the ventral roots and in nerves innervating hindlimb muscles. The lowest threshold site for reflex facilitation was found in a region just ventral to the superior colliculus. A descending volley was recorded from the medulla midline, in the region of the medial longitudinal fascicle (MLF) and from the spinal cord surface at thoracic and lumbar level. The latency of the descending volley and of the motor responses indicates that excitation of hindlimb motoneurons was due to activation of a disynaptic pathway having a relay in the lower brainstem. All spinal and peripheral responses evoked by PT stimulation disappeared when a small electrolytic lesion was placed in the MLF 1-2 mm rostral to the obex. The results show that in the rat the PT region may exert a powerful facilitatory action on hindlimb motoneurons
Bioreactor transient exposure activates specific neurotrophic pathways in cortical neurons
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