NextSense raises $16M Series A for EEG-enabled sleep earbuds
Summary
NextSense raised $16 million in an oversubscribed Series A round led by Ascension Ventures, with participation from Satori Neuro, Corundum Neuroscience Fund, and individual investors including Stanford neuroscientist Dr. David Eagleman. The Mountain View, California-based company, spun out of Alphabet's X moonshot factory, is launching Smartbuds - the world's first wireless consumer earbuds with clinical-grade EEG sensors for sleep tracking and brain health optimization.
Why it matters
NextSense aims to democratize brain health by bringing clinical-grade EEG sensing to a consumer audio form factor, moving sleep tracking beyond proxy signals like heart rate and motion to direct brain measurement. The company's Slow-Wave Boost mode, which uses auditory stimulation to increase deep sleep metrics by up to 50%, represents a new category of closed-loop wearable neuromodulation that could reshape the $65 billion sleep technology market.
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