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. 2021 Jul 20;15:690571. doi: 10.3389/fnbeh.2021.690571

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Copyright © 2021 Paffhausen, Petrasch, Wild, Meurers, Schülke, Polster, Fuchs, Drexler, Kuriatnyk, Menzel and Landgraf.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Spike train evaluations for bee A. (A) The neuronal activity recorded during a flight from two channels exhibited high noise levels, most of which was eliminated by subtracting the two channels in the digital domain. (B) The differential raw trace shows spikes above residual noise. (C) Recording from (B) zoomed in on two individual spikes (exceeding the horizontal threshold potential). The recording was spike sorted to extract single-unit activity. (D) Spike shape template of units shown in (C). (E) Inter-spike interval (ISI) distribution showing a single mode at 21 ms and very few instances below 5 ms. (F) Spike rate over time per flight (see Figure 4). Each graph represents a repetition of a continuous flight path from start to finish for the same trefoil trajectory. The repetitions share similar features synchronized to the time (and therefore place) of the flown path.