This subproject is one of many research subprojects utilizing theresources provided by a Center grant funded by NIH/NCRR. The subproject andinvestigator (PI) may have received primary funding from another NIH source,and thus could be represented in other CRISP entries. The institution listed isfor the Center, which is not necessarily the institution for the investigator.During the reporting period, our laboratory focused on the link between asymmetries in manual and vocal signals and neuroanatomical asymmetries in language homologs in the chimpanzee brain. We found that that greater oro-facial motor control is associated with greater motor skill in apes. Additionally, we found that handedness for intraspecies communication is very similar to those reported for intraspecies communication. In our studies, it was demonstrated that chimpanzees are sensitive to attentional cues in the execution of communicative signals and that variation in the integration of gesture and gaze alternation is associated difference in gray and white matter tissue concentrations.
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