"RIGHT-HANDEDNESS."
نویسندگان
چکیده
منابع مشابه
Chimpanzee right-handedness reconsidered: Evaluating the evidence with funnel plots.
Evidence for population-level right-handedness in nonhuman primates seems inconsistent and contradictory, and many hypotheses have been advanced to account for this volatility. Funnel plots (scatter plots of percent right-hand use vs. sample size) offer a straightforward graphical technique for assessing: 1) the strength and consistency of handedness, 2) whether variability is consistent with n...
متن کاملThe Left–Right Polarity Puzzle: Determining Embryonic Handedness
W henever symmetry is broken in nature to yield only one of two equally probable outcomes, whether in physics, chemistry, or biology, there is an intriguing problem to be solved. Physicists from M. and P. Curie to T.-S. Lee and C.-D. Yang puzzled over such phenomena at the atomic level. Organic chemists puzzled over the handedness of molecules for many years after Pasteur showed that grape juic...
متن کاملThe development of handedness in left/right asymmetry.
The development of handed asymmetry requires a special mechanism for consistently specifying a difference between left and right sides. This is to be distinguished from both random asymmetry, and from those left/right differences that are mirror symmetrical. We propose a model for the development of handedness in bilateral animals, comprising three components. (i) A process termed conversion, i...
متن کاملThe mirror-neuron system and handedness: a "right" world?
To assess the relationship between the mirror-neuron system (MNS), an observation-execution matching system, and handedness, we acquired functional magnetic resonance imaging from 11 right-handed (RH) and eight left-handed (LH) subjects to identify regions involved in processing action (execution and observation) of the right and left upper limbs. During the execution tasks, LH subjects had a m...
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: The Lancet
سال: 1897
ISSN: 0140-6736
DOI: 10.1016/s0140-6736(01)95765-4