超越定位精度：HRTF 个性化的感觉运动效应
Beyond Localisation Accuracy: Sensorimotor Effects of HRTF Individualisation
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中文总结 AI 辅助
本研究通过听觉引导视觉搜索任务发现，HRTF个性化在消声条件下能显著加快听者的反应和运动启动，表明其影响超越传统定位精度，评估感觉运动行为可更敏感地揭示个性化益处。
中文摘要 AI 辅助
日常听觉需要大脑整合来自身体、环境、其他感官和运动的线索，并持续将听觉信息转化为行动。然而，HRTF（头部相关传递函数）个性化通常仍通过定位精度来评估，这可能无法完全捕捉其对这一感觉运动过程的影响。在此，我们研究这些影响是否可以通过在更具生态效度的听觉任务中的行为来揭示。我们采用了一种听觉引导的视觉搜索范式，在该范式中，听者在自由移动的同时，利用共置的虚拟声音定位视觉目标，并在消声和混响条件下比较个性化与非个性化的HRTF。通过反应时间和运动组织测量来评估表现。在消声条件下，个性化HRTF比非个性化HRTF产生更快的反应，平均减少约200毫秒，且对前后声源位置的优势最为明显。这一优势主要体现在运动启动上，而整体运动幅度仅受到微弱影响。在混响条件下，HRTF相关的差异消失。这些结果表明，即使传统定位结果的差异有限，HRTF个性化也能影响听者规划和启动定向行动的方式。因此，将感觉运动行为与定位表现一起评估，可能为HRTF个性化的感知益处提供更敏感且更具生态相关性的解释。
英文摘要
Everyday listening requires the brain to integrate cues from the body, environment, other senses, and movement, continuously translating auditory information into action. Yet HRTF individualisation is still commonly assessed through localisation accuracy, which may not fully capture its effects on this sensorimotor process. Here, we investigate whether these effects can instead be revealed through behaviour in a more ecologically valid listening task. We used an aurally guided visual search paradigm in which listeners located a visual target using a co-located virtual sound while moving freely, comparing individualised and non-individualised HRTFs under anechoic and reverberant conditions. Performance was assessed through response times and measures of movement organisation. In anechoic conditions, individualised HRTFs produced faster responses than non-individualised HRTFs, with an average reduction of approximately 200ms and the clearest benefit for front-back source locations. This advantage was expressed primarily in movement initiation, whereas overall movement extent was only weakly affected. Under reverberant conditions, HRTF-dependent differences disappeared. These results suggest that HRTF individualisation can influence how listeners plan and initiate orienting actions even when differences in conventional localisation outcomes are limited. Assessing sensorimotor behaviour alongside localisation performance may therefore provide a more sensitive and ecologically relevant account of the perceptual benefits of HRTF individualisation.
发表机构
- University of Genoa（热那亚大学）
- Imperial College London（帝国理工学院）
机构由 AI 辅助整理，请以论文原文为准。
