This paper reviewed recent lesion and functional imaging studies in this field and focused on: (1) the properties of sign paraphasia caused by left and right brain damages;

• 该文回顾了近年来在该领域内进行的损伤研究及功能性成像研究，着重综述了三个问题：（1）左右半球损伤造成的手语失语症的特点；