The myeloarchitectonics of the dorsomedial thalamic nucleus of the dog.
نویسنده
چکیده
The evolution of the dorsomedial nucleus is closely associated with that of the prefrontal cortex. In man and primates this nucleus attains its highest evolutionary level in connection with the strong expansion of the prefrontal cortical lobes. Many authors (Walker 1938, 1940, Waller 1940, Bonin 1948, Pribram, Chow and Semmes 1953, Krieg 1954, ScolloLovizzari and Akert 1963, Akert 1964, Brutkowski 1965), independently have confirmed the existence of three distinct systems of fibres which connect the particular parts of the dorsomedial nucleus with definite cortical regions and described them in detail. Walker (1936, 1938 and 1940) closely examined the cytoarchitectonics of the dorsomedial nucleus in the monkey. He demonstrated the existence of three parts of this nucleus, the magnocellular part, situated medially, the parvicellular part, situated in the central portion of the nucleus, and the paralamellar part, which lies on the lateral side. An analogous division of the dorsomedial nucleus was found in the brain of man by Freeman and Watts (1947). Using the method of retrograde degeneration following surgical lesions of the frontal cortex, these authors localized the cortical projection from the dorsomedial nucleus. Describing the cytoand myeloarchitectonics of this nucleus in man, Dekaban (1953) ascertained the existence of only two parts, the magnocellular part and the parvicellular. In carnivores the structure of the dorsomedial nucleus has not as yet been worked out in detail except for the studies carried out by Rioch (1929, 1931), who described the myeloarchitectonics of the whole diencephalon but paid only little attention to the dorsomedial nucleus. An investigation of the normal structure of his nucleus in the dog seems
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ورودعنوان ژورنال:
- Acta neurobiologiae experimentalis
دوره 30 2 شماره
صفحات -
تاریخ انتشار 1970