According to online reports, data shows that Coinbase co-founder Fred Ehrsam has become the latest Silicon Valley billionaire to join the brain health industry. His startup Nudge has hired at least eight employees who have worked for Musk's Neuralink. Unlike Neuralink's technology path that uses intra-brain chip implantation, Ehrsam's Nudge aims to develop a consumer-grade head-mounted device that uses ultrasound technology to achieve the goal of "one-click treatment of brain diseases, improving mood and assisting sleep." Scientists pointed out that there are still many disputes about the company's technical plan and the scientific principles behind it, but Ehrsam, as the founder of Coinbase, the world's largest crypto exchange, has its successful experience and strong funds (the billionaire index shows that it is worth at least US$3.2 billion). A strong competitor in this field.