Goodin D S, Waltz D A, Aminoff M J
Neurology. 1985 Mar;35(3):378-84. doi: 10.1212/wnl.35.3.378.
Stimulus-related and event-related components of the visual evoked potential were recorded in three separate tasks that required language comprehension or spatial discrimination. Task-dependent asymmetries in the evoked potential were found for both the language task and one of the tasks involving spatial discrimination. Moreover, an identical stimulus presented in two different contexts elicited potentials with a significantly different distribution over the two sides of the head. These asymmetries were largely confined to the event-related components and presumably reflect task-dependent differences in neural processing. Reaction-time studies for these tasks, however, indicated that these asymmetries occurred too late to arise from neural structures responsible for language comprehension or spatial discrimination per se, and must therefore reflect subsequent neural events.
在三项分别需要语言理解或空间辨别能力的任务中，记录了视觉诱发电位的刺激相关成分和事件相关成分。在语言任务以及其中一项涉及空间辨别的任务中，均发现了诱发电位的任务依赖性不对称性。此外，在两种不同情境下呈现的相同刺激，在头部两侧诱发的电位分布显著不同。这些不对称性主要局限于事件相关成分，大概反映了神经处理过程中与任务相关的差异。然而，这些任务的反应时间研究表明，这些不对称性出现得太晚，不可能源于负责语言理解或空间辨别本身的神经结构，因此必然反映了后续的神经事件。
