A groundbreaking study by the International Brain Laboratory (IBL) has mapped the activity of a mammalian brain with unprecedented detail, challenging existing understanding of decision-making. Using data from over 600,000 mouse brain cells across 12 labs, the research, published in Nature, revealed that decision-making involves far more brain regions than previously thought. The standardized experiment, using Neuropixels probes, showed widespread brain activity correlated with decision-making, even in guess-based scenarios. This large-scale collaboration, modeled on projects like the Human Genome Project, represents a significant advance in neuroscience, paving the way for future causal studies.

Prepared by Olivia Bennett and reviewed by editorial team.