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Faculty of Health and Behavioural Sciences - Papers (Archive)

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2007

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Full-Text Articles in Medicine and Health Sciences

Things Are Looking Up: Differential Decline In Face Recognition Following Pitch And Yaw Rotation, Simone K. Favelle, Stephen A. Palmisano, Ryan T. Maloney Jan 2007

Things Are Looking Up: Differential Decline In Face Recognition Following Pitch And Yaw Rotation, Simone K. Favelle, Stephen A. Palmisano, Ryan T. Maloney

Faculty of Health and Behavioural Sciences - Papers (Archive)

Previous research into the effects of viewpoint change on face recognition has typically dealt with rotations around the heads vertical axis (yaw). Another common, although less studied, source of viewpoint variation in faces is rotation around the heads horizontal pitch axis (pitch). In the current study we used both a sequential matching task and an old/new recognition task to examine the effect of viewpoint change following rotation about both pitch and yaw axes on human face recognition. The results of both tasks showed that recognition performance was better for faces rotated about yaw compared to pitch. Further, recognition performance for …


Differences In Membrane Acyl Phospholipid Composition Between An Endothermic Mammal And An Ectothermic Reptile Are Not Limited To Any Phospholipid Class, Stephen J. Blanksby, Todd W. Mitchell, Anthony J. Hulbert, Paul Else, K Ekroos Jan 2007

Differences In Membrane Acyl Phospholipid Composition Between An Endothermic Mammal And An Ectothermic Reptile Are Not Limited To Any Phospholipid Class, Stephen J. Blanksby, Todd W. Mitchell, Anthony J. Hulbert, Paul Else, K Ekroos

Faculty of Health and Behavioural Sciences - Papers (Archive)

This study examined questions concerning differences in the acyl composition of membrane phospholipids that have been linked to the faster rates of metabolic processes in endotherms versus ectotherms. In liver, kidney, heart and brain of the ectothermic reptile, Trachydosaurus rugosus, and the endothermic mammal, Rattus norvegicus, previous findings of fewer unsaturates but a greater unsaturation index (UI) in membranes of the mammal versus those of the reptile were confirmed. Moreover, the study showed that the distribution of phospholipid head-group classes was similar in the same tissues of the reptile and mammal and that the differences in acyl composition …