[Spatial organization of the corticopalladial projection system of dog brain].
Spatial organization of corticopallidal projectional system was studied in 11 outbred dogs by method based on horse radish peroxidase transport. It was demonstrated that globus pallidum receives projections predominantly from neocortical zones (motor, premotor, somatosensory, parietal and auditory and from insular field of mesocortex. Mesocortical (prelimbic, orbital and insular) and allocortical (entorhinal, piriform and periamygdalar) including archicortex (subicular part of hippocampal formations) fields project onto ventral pallidum. Entopeduncular nucleus receives projections from neocortical zones (motor, premotor, somatosensory, parietal and auditory), mesocortex (prelimbic, orbital, insular and cingular fields) and allocortex (entorhinal and periamygdalar fields). The data obtained indicate specificity of distribution of cortical afferent projectional fibres in each of nuclei studied which allows to consider globes pallidum as motor zone and ventral pallidum as limbic zone of paladial complex. As projections from functionally different cortical fields were revealed in entopeduncular nucleus it may be suggested that this is the exact site for interaction of functionally different information, including the one received from the cortex.
Chivileva
O G
OG
Laboratory of Higher Nervous System Physiology, I.P. Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg.
D000818:Animals; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000033:anatomy & histology* / Q000166:cytology; D004285:Dogs / Q000033:anatomy & histology*; D020392:Entopeduncular Nucleus / Q000033:anatomy & histology / Q000166:cytology; D005917:Globus Pallidus / Q000033:anatomy & histology* / Q000166:cytology; D008032:Limbic System / Q000033:anatomy & histology / Q000166:cytology; D009044:Motor Cortex / Q000033:anatomy & histology / Q000166:cytology; D009434:Neural Pathways / Q000166:cytology; D009474:Neurons / Q000166:cytology; D013238:Stereotaxic Techniques; D014018:Tissue Distribution