Robin D A, Tranel D, Damasio H
Department of Speech Pathology and Audiology, University of Iowa, Iowa City 52242.
Brain Lang. 1990 Nov;39(4):539-55. doi: 10.1016/0093-934x(90)90161-9.
The auditory perception of temporal and spectral information was studied in subjects with lesions in the temporoparietal region of the left (LH group), or right (RH group) hemisphere (n = 5 in each group) and in five normal controls. The temporal tasks included gap detection and two complex pattern perception tasks in which subjects had to identify the placement of the two closest tones (separated by the shortest interval) within a sequence of six tones. The spectral tasks involved pitch matching and frequency discrimination. The results showed a "double dissociation": (1) the LH group was impaired in their ability to perceive temporal information, but the perception of spectral information was normal, and (2) the RH group was impaired in their ability to perceive spectral information, but the perception of temporal information was normal. The findings are consistent with the notion that temporal processing is a function of left-hemisphere structures and that spectral processing is a function of right-hemisphere structures.
对左侧（LH组）或右侧（RH组）颞顶叶区域有损伤的受试者（每组n = 5）以及五名正常对照者进行了时间和频谱信息的听觉感知研究。时间任务包括间隙检测和两项复杂模式感知任务，在这些任务中，受试者必须识别六个音调序列中两个最接近音调（间隔最短）的位置。频谱任务涉及音高匹配和频率辨别。结果显示出“双重分离”：（1）LH组在感知时间信息的能力上受损，但频谱信息的感知正常；（2）RH组在感知频谱信息的能力上受损，但时间信息的感知正常。这些发现与以下观点一致，即时间处理是左半球结构的功能，而频谱处理是右半球结构的功能。
