Abstract Today’s typical application of geometric morphometrics to a quantitative comparison organismal anatomies begins by standardizing samples homologously labelled point configurations for location, orientation, and scale, then renders the ensuing comparisons graphically thin-plate spline as applied group averages, principal components, regression predictions, or canonical variates. The sca...

This study utilizes voxel-based morphometry to examine the neural basis of developmental changes in transitive reasoning in parietal regions. Two groups of participants (young adolescents and adults) performed a transitive reasoning task, subsequent to undergoing anatomical MRI brain scans. Behaviorally, adults performed better on the transitive reasoning task than the young adolescents. Grey m...

Side orientation of cells is usually ambiguous in unicellular organisms, making it impossible to separate components of directional asymmetry (DA) and fluctuating asymmetry (FA). However, frustules of the diatom Luticola poulickovae have biradially symmetric outlines, and their central areas bear ornamentation that is asymmetric across the apical axis. The goal of this study was to explore diff...

New techniques of capturing shape geometry for the purpose of studying asymmetry in biological objects bring the need to develop new methods of analyzing such data. In this paper we propose a method of mesh asymmetry analysis and decomposition intended for use in geometric morphometry. In geometric morphometry the individual bilateral asymmetry is captured by aligning a specimen with its mirror...