Tan U, Ors R, Kürkçüoglu M, Kutlu N, Cankaya A
Department of Physiology, Medical Faculty, Atatürk University, Erzurum, Turkey.
Int J Neurosci. 1992 Feb;62(3-4):155-63. doi: 10.3109/00207459108999768.
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.
对男、女新生儿的抓握反射偏侧化进行了研究。结果发现，男性右手的平均抓握反射强度高于左手，但差异不显著。女性右手的平均抓握反射强度显著高于左手。男性和女性受试者右手的平均抓握反射强度之间没有显著差异。发现男性左手的平均反射强度高于女性；差异仅略微显著。右减左（R - L）反射强度与两性的右、左反射强度均呈显著正线性关系。然而，这种关系在右反射中比左反射中更为明显。男性右手和左手的反射强度与体重之间存在显著的正线性相关性。女性的反射强度与体重之间未显示出这种关系。根据大脑偏侧化及其激素调节对新生儿抓握反射中这些与性别相关的差异进行了讨论。
