Elliott D, Weeks D J, Gray S
Motor Behaviour Laboratory, McMaster University, Hamilton, Ontario, Canada.
Neuropsychologia. 1990;28(12):1307-15. doi: 10.1016/0028-3932(90)90046-q.
Mentally handicapped adults with and without Down's syndrome performed single movements and movement sequences following both verbal and demonstration cueing conditions. While the type of cue did not influence the performance of control subjects, Down's syndrome individuals exhibited more error following verbal cueing. These findings could not be explained on the basis of verbal encoding differences between the groups. The results support the notion that Down's syndrome persons suffer from a dissociation of the functional system responsible for speech perception and the system involved with the organization of complex movement.
患有和未患有唐氏综合征的成年智力障碍者在言语和示范提示条件下执行单个动作和动作序列。虽然提示类型不影响对照组受试者的表现，但唐氏综合征患者在言语提示后表现出更多错误。这些发现无法基于两组之间的言语编码差异来解释。结果支持这样一种观点，即唐氏综合征患者存在负责言语感知的功能系统与参与复杂动作组织的系统分离的情况。
