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. 2021 Oct 15;12:763200. doi: 10.3389/fgene.2021.763200

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Copyright © 2021 Niu, Zhang, Li, Wang and Li.

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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Analyzing food-approaching behavior using high-magnification recording (A) Two video snapshot images showing FAE under feeding (left) and no-feeding conditions (right) (B) Proportional distribution of FAEn. The numbers on each column indicate the percentage of the event numbers with or without feeding in the total event number (551) (C) Proportional distribution of FAErt. The numbers on each column indicate the percentage of the residence time with or without feeding in the total residence time (4,132 s) (D) The proportion of total feeding and no-feeding events (FAEn) and time (FAErt) (E) As the cut-off threshold increases from 2 to 9 s, the ratio of retained feeding events to all feeding events (200) gradually decreases, while the ratio of retained no-feeding events to all no-feeding events (351) decreases rapidly (F) The proportion of retained FAErt with the cut-off threshold set to either 6 or 7 s.