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目标范围对震区分任务的影响,用于回声定位瓶鼻海豚 (Tursiops truncatus)

Katie A Christman^1,2, James J Finneran³, Madelyn G Strahan²

¹Department of Psychology, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA.

The Journal of the Acoustical Society of America

|December 15, 2025

概括

海豚海豚是什么意思

科学领域:

海洋生物学海洋生物学
生物声学是一种生物声学.
感官神经科学是一种神经科学.

背景情况:

海豚利用生物声波进行导航和猎物检测.
对确定目标范围而言,回声延迟分辨率至关重要.

研究的目的:

为了研究海豚对回声延迟变化的敏感性,在各种目标范围进行了研究.
了解依赖范围的生物声纳性能背后的机制.

主要方法:

海豚在模拟范围 (2.5-20米) 进行了幻影回声的动检测任务.
记录了听觉唤起的潜能 (AEP),以评估回声检测能力.
与发出的点击相比,回声水平保持不变.

主要成果:

在<5m和>10m的范围内,跳检测灵敏度下降.
降低 <5m 的灵敏度与通过点击对回声的前向掩盖有关.
尽管减少了前方掩盖,但发生了>10m的降低灵敏度,这表明了集成的限制.

结论:

海豚的回声延迟灵敏度在特定范围内 (5-10m) 是最佳的.
前方掩盖影响近距离检测.
长距离的有限回声集成会影响生物声波的性能.

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