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首页> 外文期刊>The Journal of Neuroscience: The Official Journal of the Society for Neuroscience >Influence of static eye and head position on tone-evoked gaze shifts.
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Influence of static eye and head position on tone-evoked gaze shifts.

机译：静态眼睛和头部位置对语气诱发的凝视移动的影响。

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摘要

The auditory system represents sound-source directions initially in head-centered coordinates. To program eye-head gaze shifts to sounds, the orientation of eyes and head should be incorporated to specify the target relative to the eyes. Here we test (1) whether this transformation involves a stage in which sounds are represented in a world- or a head-centered reference frame, and (2) whether acoustic spatial updating occurs at a topographically organized motor level representing gaze shifts, or within the tonotopically organized auditory system. Human listeners generated head-unrestrained gaze shifts from a large range of initial eye and head positions toward brief broadband sound bursts, and to tones at different center frequencies, presented in the midsagittal plane. Tones were heard at a fixed illusory elevation, regardless of their actual location, that depended in an idiosyncratic way on initial head and eye position, as well as on the tone's frequency. Gaze shifts to broadband sounds were accurate, fully incorporating initial eye and head positions. The results support the hypothesis that the auditory system represents sounds in a supramodal reference frame, and that signals about eye and head orientation are incorporated at a tonotopic stage.
机译：听觉系统最初以头部居中的坐标表示声源方向。若要将视线从视线转移到声音，应结合眼睛和头部的方向来指定相对于眼睛的目标。在这里，我们测试（1）此转换是否涉及在以世界为中心或以头部为中心的参考系中表示声音的阶段，以及（2）声音空间更新是否发生在表示视线移位的地形组织运动级别或内部。局部组织的听觉系统。人类的听众产生了不受约束的注视，从很大范围的初始眼睛和头部位置向短暂的宽带声音爆发转移，并在矢状面中部呈现了不同中心频率的音调。声音以固定的幻觉高度听到，而不管它们的实际位置如何，这取决于初始的头和眼位置以及声音的频率。将视线转移到宽带声音是准确的，完全结合了初始的眼睛和头部位置。结果支持这样的假设，即听觉系统代表超模态参考框架中的声音，并且关于眼睛和头部方向的信号在色调阶段被合并。

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