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Biomedical subjects

L J Goodman

Publications and source records attributed to L J Goodman.

At least 91 records · Page 5Linked to original sources
PubMed1975

The projection of ocellar neurons within the brain of the locust, Schistocerca gregaria.

Cobalt iontophoresis of the median and lateral ocellar nerves of Schistocerca gregaria, combined with silver impregnated sections of the brain, has demonstrated the projection area of the large and medium-sized ocellar afferent neurons. These neurons terminate within the brain and their cell bodies lie within the protocerebrum. Ocellar neurons project to two discrete areas on each side of the brain, each area receiving input from a different set of fibres. Both postero-dorsal complexes receive an imput from two large ipsilateral and two large median fibres. Their dendritic fields maintain an ordered spatial array relative to one another. The two antero-lateral complexes receive an imput from one large ipsilateral fibre and medium-sized ipsilateral and medium small-field afferent fibres. Each lateral ocellus has two large fibres in common with the median ocellus. These lateromedial fibres receive photoreceptor input from both ocelli but form no major arborisations within the brain. The lateral ocellar tracts appear to form a third ocellar association area since higher-order neurons branch amongst the lateral and latero-medial fibres within the tract. The axons of the higher-order neurons descend to the ventral cord via the circumoesophageal commissures.

Animals↗
PubMed1975

The longevity and mortality of American physicians, 1969-1973.

This paper analyzes the mortality experience of male and female physicians during the five-year period 1969 through 1973 in terms of age, sex, geographic location, and medical specialty. Physician mortality and longevity are then compared with the experience prevailing among the U.S. white population of the same age and sex. Relationships between socioeconomic status and mortality suggest that physicians should have a better mortality experience than the general population and as such have a greater overall expectation of life. Previous studies of physician mortality in the United States using data from the records of the American Medical Association, have examined physician mortality relative to comparable groups of white males. No studies of physician mortality utilizing a population-based approach have been reported since that of the 1949 to 1951 population of physicians, and previous studies may have been subject to certain limitations in the data. Empirical findings are presented which demonstrate the improvement in physician longevity since 1925. The relationship between age- and sex-specific mortality and geographic location and medical specialization is also discussed.

Adult↗