Neural circuits in the hippocampus are critical for navigation and memory. In this study, hippocampal activity was recorded from freely flying bats. It was found that during rest, bats exhibited time-compressed replay of flight trajectories, occurring at spatially and temporally distant locations. The speed of these replays varied with trajectory length. Additionally, during active flight, bats displayed representational sweeps that preceded their actual position, synchronized with their wingbeat rhythm rather than theta oscillations, highlighting distinct dynamics compared to rodents and emphasizing the need for comparative studies in naturalistic settings.
Wireless recordings from the hippocampus of freely flying bats revealed time-compressed replay of flight trajectories during rest, which occurred at locations distant from the actual behavior.
During flight, neural ensembles in bats exhibited fast representational sweeps that cyclically moved ahead of their positions, linked to the bat's wingbeat cycle instead of theta oscillations.
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