Lateralization of the Grasp Reflex in Male and Female Human Newborns

Lateralization of the Grasp Reflex in Male and Female Human Newborns

The lateralization of the grasp reflex was studied in male and female newborns. The mean grasp-reflex strength of the right hand was found to be higher than that of the left hand in males, but the difference was not significant. The mean grasp-reflex strength of the right hand was found to be signif...

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Veröffentlicht in:International journal of neuroscience 1991, Vol.62 (3-4), p.155-163
Hauptverfasser: Tan, Üner, Örs, Rahmi, Kürkçüoglu, Muzaffer, Kutlu, Necip, çankaya, Ayten
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Sprache:eng
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cerebral lateralization
grasp reflex
newborn
spinal motor asymmetry
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container_end_page 163
container_issue 3-4
container_start_page 155
container_title International journal of neuroscience
container_volume 62
creator Tan, Üner
Örs, Rahmi
Kürkçüoglu, Muzaffer
Kutlu, Necip
çankaya, Ayten
description The lateralization of the grasp reflex was studied in male and female newborns. The mean grasp-reflex strength of the right hand was found to be higher than that of the left hand in males, but the difference was not significant. The mean grasp-reflex strength of the right hand was found to be significantly higher than that of the left hand in females. There was no significant difference between the mean grasp-reflex strengths of the right hand in the male and female subjects. The mean reflex strength of the left hand was found to be higher in males than females: the difference was only marginally significant. The right minus left (R -L) reflex strength showed a significant positive linear relation to the right-and left-reflex strengths in both sexes. This was, however, much more pronounced for the right-reflex than the left-reflex. There was a significantly positive linear correlation between the reflex strengths of the right and left hands and the body weight in males. The females did not show such a relationship between reflex strength and body weight. These sex-related differences in the grasp reflex in newborns were discussed in light of cerebral lateralization and its hormonal modulation.
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source Taylor & Francis Medical Library - CRKN; Taylor & Francis Journals Complete
subjects cerebral lateralization
grasp reflex
newborn
spinal motor asymmetry
title Lateralization of the Grasp Reflex in Male and Female Human Newborns
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