Researchers at the Norwegian Defense Research Establishment are exploring ways to measure hearing levels in baleen whales. They aim to examine potential issues stemming from noise generated by underwater mining, oil drilling, and ship traffic.
Although some information is known about the high-frequency hearing of captive dolphins and orcas, little is known about larger baleen whales. They planned to measure hearing using auditory brainstem response testing.
In June, the researchers were able to get a baleen whale into a net, which was incredibly challenging given their weight and difficulties above water. Unfortunately, they were unable to conduct the experiment due to the whale’s health, which was of concern due to the whale’s paralysis likely caused by a diving reflex. They will continue to attempt the experiment next summer by using a slower approach to catching the whale.
Hagel S. (2022) How to measure a whale’s hearing. Sciencenorway.no. August 8 (accessed August 10, 2022).
If you have a dog or cat, you’ve probably seen their ears moving toward an interesting or startling sound. For professional equestrians, watching the ears of their horse allows them to gauge their shifting attention. Humans still have these same muscles, and even more interesting is their relationship to our brain and how we pay attention. …
Tai Chi is not just for increasing balance; it may also help improve cognitive performance. In a recent randomized controlled trial, study participants who practiced a form of Tai Chi twice a week for six months improved their scores on the Montreal Cognitive Assessment (MoCA) when compared to a control group (Fuzhong et al, 2023)….
The majority of people are familiar with earthquakes, but there is another phenomenon that is not nearly as predictable, and louder—skyquakes. Skyquakes are enigmatic sounds, typically described as a very loud boom or trumpet-sounding noise that has no apparent cause and seems to come from the sky. Their sound is like distant, but very loud, thunder with…