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Full-Text Articles in Social and Behavioral Sciences
Stimulus Eccentricity And Spatial Frequency Interact To Determine Circular Vection, Stephen A. Palmisano, Barbara Gillam
Stimulus Eccentricity And Spatial Frequency Interact To Determine Circular Vection, Stephen A. Palmisano, Barbara Gillam
Faculty of Health and Behavioural Sciences - Papers (Archive)
While early research suggested that peripheral vision dominates the perception of selfmotion, subsequent studies found little or no effect of stimulus eccentricity. In contradiction to these broad notions of 'peripheral dominance' and 'eccentricity independence', the present experiments showed that the spatial frequency of optic flow interacts with its eccentricity to determine circular vection magnitude—central stimulation producing the most compelling vection for high-spatial-frequency stimuli and peripheral stimulation producing the most compelling vection for lower-spatial-frequency stimuli. This interaction appeared to be due, in part at least, to the effect that the higher-spatial-frequency moving pattern had on subjects' ability to organise optic flow …
A Giant New Trimerellide Brachiopod From The Wenlock (Early Silurian) Of New South Wales, Australia, Des L. Strusz, Ian G. Percival, Anthony J. Wright, J W. Pickett, A Byrnes
A Giant New Trimerellide Brachiopod From The Wenlock (Early Silurian) Of New South Wales, Australia, Des L. Strusz, Ian G. Percival, Anthony J. Wright, J W. Pickett, A Byrnes
Faculty of Science, Medicine and Health - Papers: part A
Keteiodoros bellense n.gen. and n.sp. is a remarkably large trimerellide brachiopod from the Wenlock Dripstone Formation, southeast of Wellington, central New South Wales. The probable articulatory mechanism is unusual for trimerellides. It apparently involved both flattened sections of the lateral commissures which acted as pivots for opening and closing the shell, and a large and strongly modified articulating plate (which partly envelopes a robust dorsal umbo) articulating with the pseudointerarea at the posterior end of the ventral platform. The heavy dorsal umbo probably acted as a counterbalance to the anterior part of the valve; the diductor muscles were apparently attached …
Micronutrient Status Of Older Coloured South Africans, K E. Charlton, Petro Wolmarans, Marita Kruger, Demetre L. Labadarios, Ingrid Aronson, Carl J. Lombard
Micronutrient Status Of Older Coloured South Africans, K E. Charlton, Petro Wolmarans, Marita Kruger, Demetre L. Labadarios, Ingrid Aronson, Carl J. Lombard
Faculty of Science, Medicine and Health - Papers: part A
Objective. To investigate the dietary intake and nutritional status of older coloured South Africans in the Cape Peninsula with regard to their micronutrient status. Design. Cross-sectional analytical study. Methods. A random sample of 200 non-institutionalised subjects in Cape Town aged ^ 65 years was drawn using a two-stage cluster design. Trained fieldworkers interviewed subjects to obtain demographic, dietary and lifestyle data, to draw fasting blood samples for biochemical, haematological, iron status and vitamin D (serum 25-hydroxyvitamin D (25(OH)D)), serum vitamin B12 and red blood cell folate analyses. Nutrient intake was assessed with a validated quantified food frequency questionnaire. Results. The …
Southern Africa Is Good Place To Research Role Of Fetal Malnutrition In Chronic Diseases, A Rp Walker, K E. Charlton
Southern Africa Is Good Place To Research Role Of Fetal Malnutrition In Chronic Diseases, A Rp Walker, K E. Charlton
Faculty of Science, Medicine and Health - Papers: part A
Editor — We are interested in Scrimshaw's allusion to populations in Latin America in his editorial on the relation between fetal malnutrition and chronic disease in later life. There, in the 1960s, despite a high prevalence of low birth weight, the preva lence of atherosclerosis and of myocardial infarction was low.