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. 2019 Sep 3;10:3970. doi: 10.1038/s41467-019-11938-8

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — Gamma detection method shows frequency specificity and tracks the strength and duration of mid-gamma events. a Average BLA spectrograms around the first trigger generated by the gamma detection algorithm, for bursts containing different numbers of triggers (1-trigger to 5-trigger bursts, left to right). The first trigger of each burst is preceded by two above-threshold gamma cycles. Color bar: Z-scored spectral amplitude. Top: Example raw (black) and filtered (red) LFP traces for each burst size, along with trigger times (blue). b Similar spectrograms but during random triggering. c Probability of triggering within slow-frequency bursts (1–30 Hz) during mid-gamma detection, stratified by slow-frequency burst duration (x-axis) and amplitude (y-axis). Side bar graphs indicate marginal distributions for the corresponding dimension. Color bar: Triggering probability. d Probability of triggering within mid-gamma frequency bursts (40–70 Hz) during mid-gamma detection. e Probability of triggering within high-frequency bursts (90–250 Hz) during mid-gamma detection. f Probability of triggering within slow-frequency bursts (1–30 Hz) during random detection. g Probability of triggering within mid-gamma frequency bursts (40–70 Hz) during random detection. h Probability of triggering within high-frequency bursts (90–250 Hz) during random detection