Schizotypal trait in healthy women is associated with a shift away from dextrality on a spatial motor control task, but not on a force control task
Schizotypal trait in healthy women is associated with a shift away from dextrality on a spatial motor control task, but not on a force control task
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DOI：
10.1016/j.psychres.2012.05.032
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发表时间：
2012-12-30
影响因子：
11.3
通讯作者：
Kunugi, Hiroshi
中科院分区：
文献类型：
--
作者：
Hori, Hiroaki;Teraishi, Toshiya;Kunugi, Hiroshi
精神分裂症和精神分裂症是同一个连续统，而精神分裂症是真维度还是准维度一直存在争议。有证据表明，大脑半球偏侧化程度降低和混合利手与精神分裂症和多形性相关。然而，与运动功能任务评估的偏侧化的可能关系的神经型还没有得到很好的记录。一些使用精细运动控制任务的研究已经证明了在学生群体中，侧化和侧化减少之间的关系，但在社区样本中做得很少。在这里，我们雇用了249名健康女性，并研究了与分裂型人格问卷和运动功能评估与普渡钉板测试（作为空间运动控制的措施）和握力测试评估的典型特征之间的关联。相关分析和分类分析均表明，在精细运动控制任务中，非典型特征与双侧和双侧偏误显著相关，但在握力测试中不显著。分裂型并没有显着影响这些任务的性能水平。这些结果表明，在健康女性中，右型特征与远离右旋性的转变有关，支持了右型的全维度模型。(C)2012爱思唯尔爱尔兰有限公司保留所有权利。
It is generally acknowledged that schizophrenia and schizotypy lie on the same continuum, while there is an ongoing debate as to whether schizotypy represents true dimension or quasi-dimension. Evidence suggests that reduced hemispheric lateralization and mixed handedness are associated with both schizophrenia and schizotypy. However, the possible relationship of schizotypy with laterality as assessed with motor function tasks has not been well documented. A few studies using fine motor control tasks have demonstrated the relationship between schizotypy and reduced laterality among student populations, yet little has been done in community samples. Here we employed 249 healthy women and examined the association between schizotypal traits assessed with the Schizotypal Personality Questionnaire and motor functions assessed with the Purdue Pegboard test (as a measure of spatial motor control) and a handgrip force test. Correlational and categorical analyses both showed that schizotypal traits were significantly associated with leftward and bilateral bias in the fine motor control task, but not in the handgrip force test. Schizotypy did not significantly affect the performance level on either of these tasks. These results indicate that schizotypal traits in healthy women are associated with a shift away from dextrality, supporting the fully dimensional model of schizotypy. (C) 2012 Elsevier Ireland Ltd. All rights reserved.