听而不“闻”?人声失认症的神经机制

人声身份识别对于社交交流的许多方面都至关重要, 大多数个体都能根据声音识别其声源者, 然而人声失认症患者似乎已经丧失了这种能力。人声失认症是指人声身份加工的不同阶段出现障碍, 症状主要包括获得性人声失认症, 发展性人声失认症及其亚型。获得性人声失认症患者受损脑区主要包括颞叶, 赫氏脑回和颞极, 发展性人声失认症主要与右后侧颞上沟的非典型性反应和颞叶与杏仁核间的功能联结障碍有关。以后的研究可以重点关注人声失认症的筛选方法, 界定范围和文化差异等方面。

The neural mechanism of phonagnosia

Human voice recognition is critical for many aspects of social communication.Most people can recognize identity from the voice,but people with phonagnosia seem to have lost this ability.By definition,it means the deficits occurring at different stages of the processing of voice identity.It includes acquired phonagnosia developmental phonagnosia and its subtypes.Acquired phonagnosia patients’damaged brain regions mainly include the temporal lobe,Heschl's gyrus and temporal pole.Developmental phonagnosia is associated with atypical responses in the right posterior superior temporal sulcus and dysfunction in the functional connectivity between the temporal lobe and the amygdala.Future research can focus on screening methods,scoping and cultural differences for phonagnosia.