HEMISPHERIC SPECIALIZATION AND COMMUNICATION

这个子项目是许多研究子项目中利用 资源由NIH/NCRR资助的中心拨款提供。子项目和 调查员(PI)可能从NIH的另一个来源获得了主要资金， 并因此可以在其他清晰的条目中表示。列出的机构是 该中心不一定是调查人员的机构。 今年，我们实验室的研究主要集中在对黑猩猩临时平面(PT)(与WerNicke区同源)的体积和偏侧化的活体和死后分析。我们发现，从磁共振图像测量的PT与Brodmann区22(BA22)的细胞结构分布很好地对应。 在大体解剖和细胞水平的分析中，在黑猩猩中发现了显著的种群水平的向左不对称。我们进一步发现，PT中不对称性的变化与手势交流的惯用手有关，而与其他手动动作无关，这表明它在交流中具有功能作用。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. This year, studies in our laboratory focused on the in vivo and post-mortem analysis of the volume and lateralization of the planum temporale (PT) (the homolog to Wernicke's area) in chimpanzees. We found that the PT as measured from magnetic resonance images corresponds well to the cytoarchitectural distribution of Brodmann's area 22 (BA22). At both the gross anatomical and cellular levels of analysis, significant population-level leftward asymmetries were found in the chimpanzees. We further found that variation in asymmetries in the PT were associated with handedness for gestural communication but not other manual actions, suggesting that it has a functional role in communication.