Sharks benefit from some shuteye, and biologists in Australia and New Zealand think they’ve begun to understand why. Their experiments suggest sharks sleep to save energy between meals. The discovery might lead to a clearer model of how sleep evolved and developed among vertebrate animals.

脑电图 （eeg） 是一种非侵入性技术，用于记录大脑从头皮诱发和诱导的电活动。 人工智能，特别是机器学习 （ML） 和深度学习 （DL） 算法，越来越多地应用于脑电图数据，用于模式分析、组成员分类和脑机接口目的。

2018年8月2日 · To the average person, the reproductive lives of Australian sharks is steeped in mystery. But the scattering of shark eggs across our coastlines gives a small insight into the way adult sharks bring their pups into the world.

2024年3月19日 · What makes shark eggs fascinating are the peculiar coverings on the eggs. For example, the catshark embryo grows inside a long, pouch-like egg. Other oviparous shark species with strange-looking eggs include bamboo sharks, zebra sharks, and bullhead sharks.

Sharks are vital to marine ecosystems as apex predators, maintaining ecological balance through unique physiological and behavioral adaptations. However, the study of their brain activity and its relation to behavior is less advanced compared to terrestrial animals.

His experiments started by recording EEG signals from the sharks’ olfactory bulbs, parts of the brain that process odors, while sharks homed in on chum. He then turned those recordings into an electrical signal that he sends to a general region of the olfactory bulbs.

2022年5月23日 · We show usable ECG in red (automated peak-detection possible), usable EEG in blue (no movement artifacts—visual and quantitative sleep state analysis possible with unprocessed raw signals), and unusable EEG in gray.

2024年12月9日 · 来自上海交通大学，微软亚洲研究院，和上海科技大学的团队提出了一个名叫EEG2Video的AI模型，它可以根据收集的脑电（EEG）数据重建生动视频。 他们表示，模型在40类语义分类任务中的平均准确率为15.9%（随机水平为2.5%），在结构相似性指数 (SSIM) 中的平均准确率为0.256，是首次从EEG信号（一种高时间分辨率的神经信号，记录头皮电位变化）重建视频的研究。 实验范式如图1所示。 图1. 从脑电信号中重建视频的流程.

2015年9月24日 · EEG systems use electrodes placed on the scalp to pick up electrical signals produced by brain activity. Usually, they are bulky and expensive. A while back, however, I had a hand in helping my friends at OpenBCI develop a low-cost, open-source EEG system that can be easily hooked up to a computer.

2022年3月9日 · Shark mean ṀO 2 levels were significantly lower during sleep (i.e. inactive for at least 5 min) and the highest during swimming (figure 1c). These data were then parsed further to include the expression of each activity state during day and night to reveal whether sleeping animals consistently showed a lower metabolic rate while asleep.