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NationMaster - Encyclopedia: Avian pallium (222 words) |
 | In the anatomy of animals, an avian pallium is the dorsal telencephalon of a bird's brain. |
| Pallium of avian species tend to be relatively large, comprising ~75% of the telencephalic volume. |
| Both the mammalian and avian systems are characterized by major thalamic input to the telencephalon (e.g., layer IV in mammals; the core ectostriatum in birds) which is then relayed to overlying areas (layer IV projections to layers II and III in mammals; core ectostriatum projections to peri-ectostriatal belt and overlying neostriatum in birds). |
| /home/david/web/jarvis/FarriesSubpalliumProposal.html (1264 words) |
| It's evident that while homologizing mammalian and avian pallium is extremely contentious, there has been general agreement that the basal ganglia (BG) can be more easily compared, and thus a homology-based system of nomenclature for the avian BG is within reach. |
| For example, the avian pallidum (PP) doesn't seem to be divided into internal and external segments as it is in mammals, and PA (or least caudalmost PA) lacks ChAT+ neurons and personal observations). |
| Thus, a substantial part of the avian striatum outside of specialized vocal regions seems to constitute a striatum/pallidum hybrid, unlike the mammalian dorsal striatum as it is currently understood. |
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