Neuroscience Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
National Marine Mammal Foundation, San Diego, California 92106, USA.
JASA Express Lett. 2021 Aug;1(8):081202. doi: 10.1121/10.0005991.
Two previous studies suggest that bottlenose dolphins exhibit an "oddball" auditory evoked potential (AEP) to stimulus trains where one of two stimuli has a low probability of occurrence relative to another. However, they reported oddball AEPs at widely different latency ranges (50 vs 500 ms). The present work revisited this experiment in a single dolphin to report the AEPs in response to two tones each assigned probabilities of 0.2, 0.8, and 1 across sessions. The AEP was further isolated from background EEG using independent component analysis, and showed condition effects in the 40-60 ms latency range.
两项先前的研究表明，宽吻海豚对刺激序列表现出“异常”听觉诱发电位（AEP），其中两个刺激中的一个相对于另一个出现的概率较低。然而，他们报告的异常 AEP 在潜伏期范围上有很大的差异（50 毫秒与 500 毫秒）。本研究在单个海豚中重新进行了该实验，报告了对两个音调的 AEP 反应，每个音调在整个实验过程中的概率分别为 0.2、0.8 和 1。使用独立成分分析进一步从背景 EEG 中分离出 AEP，并显示出潜伏期范围为 40-60 毫秒的条件效应。
