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Biomedical subjects

L Rogers

Publications and source records attributed to L Rogers.

At least 109 records · Page 6Linked to original sources
PubMed1977

Hemispheric specialization of language: an EEG study of bilingual Hopi indian children.

Electroencephalographic (EEG) recordings were obtained from electrode placements over the left and right frontal and parietal lobes of the brain in sixteen Hopi Indian children listening to tape recorded children's stories in the Hopi and English languages. Spectral analysis of the EEG data revealed that, for the parietal leads, alpha desynchronization was relatively greater over the right hemisphere for listening to Hopi than for listening to English, which indicates a greater right hemisphere participation in the processing of the Hopi speech. The results of the experiment are directionally consistent with our hypothesis, and imply that linguistic relativity may exist on a neurolinguistic level, such that languages can differ in the relative degree to which they serve as instruments of thought in a propositional, left hemisphere mode, or in an appositional, right hemisphere mode.

Arizona↗
PubMed1967

Agar concentration in counting Clostridium colonies.

Decreasing the agar concentration of a counting medium from the usual 1.5% resulted in larger colonies with less interference from gas in Clostridium botulinum 115B and C. sporogenes PA 3679. Optimal agar concentration was 0.65% for C. botulinum with 24-hr incubation and 0.50% for C. sporogenes with 48-hr incubation. Lower concentrations yielded growth too diffuse for counting. Motility was considered the explanation for increased colony size in softer agar. The greater the degree of motility, the greater would be the diffusibility expected, and thus the higher the agar concentration required to insure discrete colonies. For quantitating motility, evaluations were made by use of microscopic examination of liquid cultures and rate of diffusion in a semisolid medium. With both criteria, the degree of motility of C. botulinum 115B clearly exceeded that of C. sporogenes PA 3679. Small-colony variants of C. botulinum in 0.65% agar yielded only small colonies on subculture, with a corresponding decrease in degree of motility of the cells by both criteria. Colony size of the nonmotile C. perfringens ATCC 3624 was unaffected by lowered agar concentrations.

Agar↗
PubMedDate not supplied

Changes in fertility relative to starting, stopping, and spacing behaviors in a migrating Mennonite community, 1775-1889.

Fertility change over time in a migrating Mennonite church congregation is reconstructed through genealogies developed from church registries of vital events during 1725-1924. The congregation was located in Prussia from 1725-1821, in Russia from 1822-1874, and in Kansas, U.S.A., from 1875-1924. Age-specific marital fertility rates were relatively low and usually peaked for women aged 25-29. Total fertility rates ranged from 1.19 to 5.29. These relatively low figures for a natural fertility population may partly reflect underreporting of births and deaths of infants, but it also reflects the heterogeneity in fertility evident for this population. Some women had many children while others were having either few or none. This pattern changed twice. Fertility was lowest during residence late in Prussia and early in Russia, peaked during residence late in Russia, and has decreased slightly for women born in the United States.

Birth Intervals↗
PubMedDate not supplied

Nursing care that patients value.

The delivery of nursing care should be based on meeting patients' individual needs. This article presents the findings of a small-scale study which explored the feelings that people express regarding the care they would like and receive from nurses.

Adult↗