Ghazanfar Asif A, Neuhoff John G, Logothetis Nikos K
Max Planck Institute for Biological Cybernetics, Spemanstrasse 38, 72076 Tübingen, Germany.
Proc Natl Acad Sci U S A. 2002 Nov 26;99(24):15755-7. doi: 10.1073/pnas.242469699. Epub 2002 Nov 12.
The detection of approaching objects can be crucial to the survival of an organism. The perception of looming has been studied extensively in the visual system, but remains largely unexplored in audition. Here we show a behavioral bias in rhesus monkeys orienting to "looming" sounds. As in humans, the bias occurred for harmonic tones (which can reliably indicate single sources), but not for broadband noise. These response biases to looming sounds are consistent with an evolved neural mechanism that processes approaching objects with priority.
对接近物体的检测对于生物体的生存可能至关重要。在视觉系统中，对逼近的感知已经得到了广泛研究，但在听觉方面仍基本未被探索。在这里，我们展示了恒河猴在朝向“逼近”声音时的行为偏差。与人类一样，这种偏差出现在谐波音调（能够可靠指示单一声源）的情况下，但在宽带噪声情况下则不会出现。这些对逼近声音的反应偏差与一种进化而来的神经机制一致，该机制会优先处理接近的物体。
