Sex differences in oral asymmetries during wordrepetition

摘要: Abstract During speech production the right side of mouth is opened to a larger degree in most people. This facial asymmetry thought be related left hemisphere dominance language processing and⧹or motor programming. We investigated asymmetrical lip separations during discrete or serial word productions handed persons. The results revealed sided separation bias both genders which words had uttered once. As soon as produced continuously, however, clear sex difference appeared with males having usual but females now showing no asymmetry, tendency for on side. These suggest existence two separate neural systems from one controls task and dominant genders. other probably involved shows regard its pattern.