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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 …
Morphology And Process On The Lateritic Coastline Near Darwin, Northern Australia, R. W. Young, Edward A. Bryant
Morphology And Process On The Lateritic Coastline Near Darwin, Northern Australia, R. W. Young, Edward A. Bryant
Faculty of Science - Papers (Archive)
Coastal morphology near Darwin is controlled mainly by the gentle warping of a lateritic profile. In synclines the lateritic cuirasse forms extensive shore platforms, but on the anticlines the pallid zone of the weathering profile is eroded by waves, causing the undercut cuirasse to collapse. The dominant modern process on the shore platforms is solutional attack on the laterite, resulting in large depressions. Many of the platforms are covered by relict layers of cemented laterite cobbles transported by waves of high energy. C14 ages on carbonate cement between the cobbles show that one sheet was deposited at about 3700 BP …