AI 中文总结
研究探讨何时立体嗅觉比单鼻孔嗅觉更有用，通过简单估算发现，在气味浓度变化大及空气中相关性空间长度尺度大时，如在表面边界层，立体嗅觉有优势，对动物追踪气味痕迹等行为有重要意义。
AI 中文摘要
近期研究强调了多种动物对双鼻孔“立体”嗅觉的运用。本研究进行了简单估算，以确定立体嗅觉相较于单鼻孔“单声道”嗅觉何时有用。我们发现，当气味浓度有较大相对变化，且空气中相关性的空间长度尺度较大时，如在表面附近的边界层，立体嗅觉具有优势。换言之，当动物在表面寻找嗅觉边界，如追踪气味痕迹时，立体嗅觉是有用的。
英文摘要
Recent works have highlighted the use of dual nostril 'stereo' olfaction by a variety of animals. In this work we perform "back of the envelope" calculations to determine when stereo olfaction is useful compared to single nostril 'mono' olfaction. We find that stereo olfaction is advantageous when there are large relative changes in the odour concentration, and when the spatial length scales of correlations in air are large, such as in the boundary layer near surfaces. In other words, stereo olfaction is useful when animals are searching surfaces for olfactory edges, such as when tracking odour trails.
