Asymmetry, Handedness and Auricle Morphometry
نویسندگان
چکیده
منابع مشابه
Manual asymmetry and handedness.
Volumetric measurements show that right-handed individuals have larger right hands than left hands. In contrast, the hands of left-handers are much more nearly symmetrical. Based on what is known about trophic interactions between neurons and targets, these findings predict a corresponding asymmetry of the relevant parts of the sensorimotor system in right-handers. The lack of an opposite-hand ...
متن کاملDermatoglyphic Asymmetry: Relation to Sex, Handedness and Cognitive Pattern
The number of ridges on the fingertips has a major genetic contribution, and is fixed by the fourth month of fetal life. Most people have a higher count on the right-hand side (R > ), approx. 20% have a higher left-hand side (L > ) count. The incidence of higher left count is greater in women and in homosexual men. Direction of dermatoglyphic asymmetry was not found to be related to handedness ...
متن کاملHandedness and asymmetry of hand representation in human motor cortex.
The cortical representation of five simple hand and finger movements in the human motor cortex was determined in left- and right-handed people with whole-head magnetoencephalography. Different movements were found to be represented by spatially segregated dipolar sources in primary motor cortex. The spatial arrangement of neuronal sources for digit and wrist movements was nonsomatotopic and var...
متن کاملSECT ION 1 Asymmetry, handedness and language lateralization
The physiology and behavior of all animals are strongly dependent on the large-scale structure of the body plan. While many animals are fundamentally bilaterally symmetric, vertebrates and many invertebrates exhibit a consistently oriented left–right (LR) asymmetry of the heart, viscera, and brain. The biased asymmetry of LR patterning is distinct from environmentally determined asymmetry or th...
متن کاملHandedness and Asymmetry of Motor Skill Learning in Right-handers
BACKGROUND AND PURPOSE The most remarkable behavioral asymmetry is handedness. The preferred hand often has better performance, motor strength, nonpreferred hand. However, whether these components are associated with skill learning is not clear. METHODS We evaluated healthy right-handers by setting a series of motor-performance tasks including skill learning, grip strength, and speed. RESUL...
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ژورنال
عنوان ژورنال: International Journal of Morphology
سال: 2015
ISSN: 0717-9502
DOI: 10.4067/s0717-95022015000400057