Neuropixels probes used to track individual neuron activity in human subjects
Researchers have utilized Neuropixels probes to record neuronal activity in a human brain for the first time during a surgical procedure.
Neuropixels, a type of silicon-based neural probe designed to capture high-density electrical signals, has been deployed in a human study for the first time. During a neurosurgical procedure in London, medical staff inserted the probe to allow researchers to monitor how individual neurons in the human brain respond to linguistic stimuli in real time.
Unlike traditional monitoring techniques that capture broad patterns of brain activity, these probes offer a granular view of information processing. By recording individual neuronal discharges, researchers can map how specific areas of the brain coordinate complex tasks. This method is often compared to moving from a general room microphone to individual lapel mics for every participant in a conversation.
Developed in 2017 by institutions including the Howard Hughes Medical Institute and Imec, the technology has been a standard tool in animal research, involving over 20 species. Experts caution that while the human trial provides new insights into neurological function, the probes remain instruments for foundational neuroscience rather than clinical diagnostic or therapeutic devices.