2007, Number 5
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Rev Mex Neuroci 2007; 8 (5)
Neuropsychology of laterality: hand preference and performance assessment
Brusasca MC, Mabel LL, Portellano PJA
Language: Spanish
References: 30
Page: 500-505
PDF size: 50.79 Kb.
ABSTRACT
Introduction: Laterality is the functional dominance of one side of the body over the other which becomes evident in the
preferential use that a person exhibits for a hand, foot, eye and ear. Motor performance in right and left – handed persons is
influenced by sex, age, and family history, just as researchers had observed.
Objective: To assess laterality in a sample of
Argentinean subjects and to inquire into possible relationships between laterality and several specific variables such as sex,
age and family history.
Subjects and Method: 197 individuals (100 women and 97 men) aged between 18 and 55. A 34.5% of
the sample had a left-handed family history. The Laterality Questionnaire and the Frame Crossing Out Test were applied.
Results: On motor performance, men exhibited a higher motor performance than women. We found that an older age tended to
a higher definition in the use of hand and foot laterality. We could not infer that the level of laterality in motor performance
increased with the age of subjects. A positive correlation between the manual preference and motor performance quotient in the
right hand was found. Individuals without a left-handed family history showed higher scores in motor performance test in right
hand (differences were not statistically significant); and they showed more definition in the manual and ocular preference
quotient. The individuals with left-handed family history showed higher scores in velocity in the left hand.
Conclusions:
Laterality is associated to sex and age, according to the observed data in previous investigations. Concluding results were not
obtained respect to familiar antecedents in preferences and performance moto
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