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Stereotaxic fluid microinjections of horseradish peroxidase into different parts of the rostral and caudal periaqueductal grey (PAG) in cats have provided substantial retrograde evidence that the somatosensory cortex (I and II), frontal cortex, insular and cingular cortex are the principal sources of cortical-PAG projections. The somatosensory cortex II(More)
The effects of catecholaminergic A-1 lateral reticular nuclei and serotoninergic neurons of NRM on pain reactions before and after various types of stimulation are presented. It was established that specific lesions of catecholaminergic (NE) neurons in A-1 nuclei using 6-hydroxydopamine, and of serotoninergic (5-HT) neurons of the nucleus raphe magnus using(More)
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