Mice Use Active Sensing to Gather Information from Their Environment

Researchers have uncovered new insights into how animals actively gather environmental information, shedding light on the role of mice in understanding sensory strategies. Active sensing, the behavior of adjusting body movements to enhance perception—such as a hawk tilting its head or a person leaning to read—aquires a specialized dimension in "infotaxis," where organisms strategically move to maximize information intake. While this strategy has been observed in species ranging from insects to primates, its presence in mice, a cornerstone of neuroscience research, has remained unproven until now. A recent study published in *Nature Neuroscience* reveals that mice employ infotaxis by altering their movements to optimize sensory input, challenging previous assumptions about their exploratory behavior.

The study, conducted by a team at the University of California, San Francisco, used advanced tracking technologies to monitor neural activity and physical movements in mice navigating controlled environments. Researchers found that mice adjusted their trajectories in response to environmental cues, prioritizing areas with higher information value, such as novel scents or spatial landmarks. This behavior mirrored the infotactic strategies seen in other animals, suggesting a conserved mechanism across species. The findings not only confirm mice as a model for studying active sensing but also highlight the evolutionary significance of information-driven movement in decision-making and survival.

This discovery bridges a critical gap in neuroscience, offering a framework to explore how sensory strategies shape cognition and behavior. By establishing mice as practitioners of infotaxis, the research opens new avenues for investigating neural circuits underlying perception and decision-making, with potential applications in understanding human sensory disorders and developing AI systems that mimic biological information-seeking. The study underscores the dynamic interplay between movement and cognition, redefining how scientists approach the study of sensory exploration.