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The autoradiographic tracing method has been used to analyze the distribution of ascending tectofugal pathways in the rhesus monkey. Our findings show that axons which arise from deep collicular neurons terminate within several dorsal thalamic nuclei which in turn project upon the frontal eye fields (area 8) and the inferior parietal lobule (area 7). Both(More)
Using a modification of Aghajanian and Rasmussen's techniques, we have developed an adult rat cervical spinal cord slice preparation in which motoneurons remain viable. Key factors are replacement of all sodium ions in the perfusion medium with sucrose during cutting and incubation, and gentle manipulation of the tissues to prevent root damage during(More)
Cytoarchitectural observations showed that the red nucleus of the albino rat consists of three distinct neuronal populations. Neurons with coarse Nissl bodies occupy the caudal end of the red nucleus and extend in diminishing number to the rostral tip. Neurons with finely granular Nissl material are the predominant cell type at the rostral tip of the red(More)
Systemic administration of apomorphine, angiotensin II, neurotensin and leucine-enkephalin induces emesis in dogs in a dose-dependent fashion. Receptors for Leu-enkephalin and angiotensin II but not apomorphine show receptor desensitization, such that a second systemic administration 5 min after the first is ineffective. Domperidone blocked the emetic(More)