Parametric geometry modeling of the carotid artery bifurcation: the need for new flow metrics
Although well established correlations now exist between regions of reversed flow and sites of arterial disease [1], little evidence is available for methodologies that systematically compare how geometrical differences affect such relationships. Drawing on techniques developed in aerodynamic design, a parametric tuning-fork geometry model of the carotid artery bifurcation - based on the glass models described in [2] - is here employed to investigate the impact of bulb size and the angle of the internal carotid artery (ICA) on time-averaged shear stress. Since we seek to directly compare the effect of varying these geometric parameters, we demonstrate the need for a new metric, the integral of negative mean shear stress (INMSS), to highlight the stronger correlation between the extent of reversed flow and bulb width relative to the angle of the ICA.
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Sex differences in memory for erotica
Abstract The research investigates how the sexes differ in their memory for sexual stones. Twenty males and 20 females read a story describing a heterosexual encounter. The story contained romantic, erotic, and neutral elements. Memory was tested via a recognition test. As hypothesised, there were significant Subject Sex by Sentence Content interactions for both recognition accuracy and decision time. Women were better and faster at identifying romantic sentences: Men were better and faster at identifying erotic sentences. The sexes did not differ in responding to neutral sentences. The research illustrates the utility of the memory bias paradigm in the domain of sexuality.