Anourova I, Rämä P, Alho K, Koivusalo S, Kahnari J, Carlson S
Institute of Biomedicine, Department of Physiology, University of Helsinki, Finland.
Neuroreport. 1999 Nov 26;10(17):3543-7. doi: 10.1097/00001756-199911260-00015.
Effects of interfering task-irrelevant tones varying in location or pitch on auditory location and pitch n-back tasks were investigated to study whether there is segregation of spatial and non-spatial information processing in the auditory working memory. The subjects performed spatial and non-spatial auditory 1- and 2-back tasks with and without location or pitch interference. In the 1-back tasks, location but not pitch interference significantly impaired location task performance whereas pitch but not location interference disrupted pitch task performance. In the 2-back tasks, neither the location nor the pitch task performance was differentially disrupted by the distractors, suggesting that there is memory load-dependent segregation in the handling of location and pitch information in the neuronal networks engaged in auditory working memory.
研究了干扰任务无关音调在位置或音高上的变化对听觉位置和音高n-back任务的影响，以探讨在听觉工作记忆中空间和非空间信息处理是否存在分离。受试者在有和没有位置或音高干扰的情况下执行空间和非空间听觉1-back和2-back任务。在1-back任务中，位置干扰而非音高干扰显著损害位置任务表现，而音高干扰而非位置干扰破坏音高任务表现。在2-back任务中，干扰物对位置和音高任务表现均无差异干扰，这表明在参与听觉工作记忆的神经网络中，位置和音高信息的处理存在记忆负荷依赖性分离。
