Comparison of the septal areas in New Guinean and European brains

Abstract

In 1966, septal nuclei of unusual size in brains of kuru-diseased Fore people from the Eastern Highlands of New Guinea were reported (Beck and Gajdusek, 1966). Microscopic investigation which did not reveal any pathological changes in these nuclei led to the question of whether their large size could be a characteristic feature of the Fore (and perhaps also of other ethnic groups of New Guinea), rather than a consequence of the disease. We had at our disposal brains from patients of coastal areas of New Guinea who did not suffer from kuru. The septal areas of eight cases were investigated by serial sections and compared to those of nine European brains. No difference in size comparable to that reported in the earlier study could be detected. We conclude that a possible pecularity in the size of the septal nuclei of Fore people cannot be generalized to the entire population of New Guinea.

Von Economo Neurons in the Anterior Insula of the Macaque Monkey

“…The macaque brains were obtained in the context of separate tract-tracing experiments approved by the local authorities (Regierungsprä sidium) and in full compliance with the European Parliament and Council Directive 2010/63/EU on the protection of animals used for experimental and other scientific purposes. The human samples were collected and processed in the context of an unrelated study (Koch et al, 1985). A detailed description of all the procedures summarized below is provided in the Supplemental Experimental Procedures.…”