Results 251 to 260 of about 97,646 (271)
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Search asymmetry in periodical changes of motion directions
Vision Research, 2022We often need to search for an object in a dynamic environment. However, there remains a limited understanding of search processes responding to dynamic inputs of stimuli, especially regarding the mid-level stages of our visual processing hierarchy. In this study, we investigated whether and to what extent search asymmetry is observed between a search ...
Hoko, Nakada, Ikuya, Murakami
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Directional Asymmetry During Combined Saccade–Vergence Movements
Journal of Neurophysiology, 2005We investigated relationships between saccadic and vergence components of gaze shifts as 10 human subjects switched visual fixation between targets aligned in the midsagittal plane that lay in different vertical directions and at different distances.
Arun N, Kumar +4 more
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Skull asymmetry in various sheep breeds: Directional asymmetry and fluctuating asymmetry
Anatomia, Histologia, EmbryologiaAbstractSheep (Ovis aries) play an important role in the economy of Turkey and the Balkan Peninsula due to their use in farming. As a domesticated species, sheep's morphometric and morphological diversity is likely determined by selective breeding practices rather than geographic distribution.
Nicoleta Manuta +6 more
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Handedness and dermatoglyphic directional and fluctuating asymmetry
Zeitschrift für Morphologie und Anthropologie, 1986The dermatoglyphics of 650 right-handed and 98 left-handed males were compared. A to tal of 66 variables were used, entailing 24 quantitative dermatoglyphic traits, 11 indices of intraindi vidual diversity, 15 indices of directional asymmetry and 16 indices of fluctuating bilateral asymme try.
E, Kobyliansky, S, Micle
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Methods for Direct Representation of Asymmetry
2021After a brief recall to the main aspects of the graphical representation of a rectangular matrix, two classes of methods to represent proximity matrices are reviewed: bilinear and distance-like methods. The main steps for the bilinear model estimation are presented by studying the properties of the Singular Value Decomposition of a proximity matrix ...
Giuseppe Bove +2 more
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Antisymmetry, directional asymmetry, and dynamic morphogenesis
Genetica, 1993Fluctuating asymmetry is the most commonly used measure of developmental instability. Some authors have claimed that antisymmetry and directional asymmetry may have a significant genetic basis, thereby rendering these forms of asymmetry useless for studies of developmental instability.
John H. Graham +2 more
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Directional asymmetry of body dimensions among white adolescents
American Journal of Physical Anthropology, 1985AbstractAsymmetry of paired dimensions has been recognized as a methodological problem in anthropometry and more recently as an indicator of environmental stress. This study seeks to determine the extent of directional asymmetry for some of the measurements commonly made in anthropometry.
L M, Schell +3 more
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Directional asymmetry in the human clavicle
International Journal of Osteoarchaeology, 1999The human right clavicle tends to be shorter than the left. A range of possible explanations can be advanced to account for this asymmetry. In the present work, clavicular morphology was studied in a medieval skeletal assemblage from Wharram Percy, England, with the aim of evaluating these competing explanations.
Simon Mays, James Steele, Mark Ford
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Mechanisms of directional asymmetry in the zebrafish epithalamus
Seminars in Cell & Developmental Biology, 2009The epithalamus of zebrafish presents the best-studied case of directional asymmetry in the vertebrate brain. Epithalamic asymmetries are coupled to visceral asymmetry and include left-sided migration of a single midline structure (the parapineal organ) and asymmetric differentiation of paired bilateral nuclei (habenulae). The mechanisms underlying the
Miguel L, Concha +2 more
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Mixture analysis of asymmetry: modelling directional asymmetry, antisymmetry and heterogeneity [PDF]
, 1999 SVD and LL are Postdoctoral Fellows with the Fund for Scientific Research Flanders (FWO Vlaanderen).
Van Dongen, Stefan +2 more
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