Modality-specific frontal and parietal areas for auditory and visual spatial localization in humans
Modality-specific frontal and parietal areas for auditory and visual spatial localization in humans
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DOI：
10.1038/11239
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发表时间：
1999-08-01
影响因子：
25
通讯作者：
Hallett, M
中科院分区：
文献类型：
--
作者：
Bushara, KO;Weeks, RA;Hallett, M
虽然后顶叶和前额叶区域在视觉刺激的空间定位中的重要性已得到证实，但它们在听觉空间感知中的作用尚不清楚。利用正电子发射断层扫描（PET）在同一受试者的听觉和视觉空间定位过程中，在顶叶上小叶、颞叶中部和外侧前额叶皮层中确定了模式特异性区域。这些发现表明，与视觉系统类似，听觉系统的等级组织延伸到颞叶之外，包括专门负责听觉空间处理的后顶叶和前额叶区域。我们的研究结果可能解释了视觉和听觉空间定位缺陷在涉及这些区域的病变后的分离。
Although the importance of the posterior parietal and prefrontal regions in spatial localization of visual stimuli is well established, their role in auditory space perception is less clear. Using positron emission tomography (PET) during auditory and visual spatial localization in the same subjects, modality-specific areas were identified in the superior parietal lobule, middle temporal and lateral prefrontal cortices. These findings suggest that, similar to the visual system, the hierarchical organization of the auditory system extends beyond the temporal lobe to include areas in the posterior parietal and prefrontal regions specialized in auditory spatial processing. Our results may explain the dissociation of visual and auditory spatial localization deficits following lesions involving these regions.