Threshold-Based Ordering of Sequential Actions during Drosophila Courtship

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Date
2019
Authors
McKellar, Claire E.
Lillvis, Joshua L.
Fitzgerald, James E.
Cannon, John G.
Simpson, Julie H.
Dickson, Barry J.
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10.1016/j.cub.2018.12.019
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Current biology ; 29 (2019), 3. - pp. 426-434.e1–e6. - Elsevier. - ISSN 0960-9822. - eISSN 1879-0445
Abstract
Goal-directed animal behaviors are typically composed of sequences of motor actions whose order and timing are critical for a successful outcome. Although numerous theoretical models for sequential action generation have been proposed, few have been supported by the identification of control neurons sufficient to elicit a sequence. Here, we identify a pair of descending neurons that coordinate a stereotyped sequence of engagement actions during Drosophila melanogaster male courtship behavior. These actions are initiated sequentially but persist cumulatively, a feature not explained by existing models of sequential behaviors. We find evidence consistent with a ramp-to-threshold mechanism, in which increasing neuronal activity elicits each action independently at successively higher activity thresholds.
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ISO 690MCKELLAR, Claire E., Joshua L. LILLVIS, Daniel BATH, James E. FITZGERALD, John G. CANNON, Julie H. SIMPSON, Barry J. DICKSON, 2019. Threshold-Based Ordering of Sequential Actions during Drosophila Courtship. In: Current biology. Elsevier. 29(3), pp. 426-434.e1–e6. ISSN 0960-9822. eISSN 1879-0445. Available under: doi: 10.1016/j.cub.2018.12.019
BibTex
@article{McKellar2019Thres-49997,
  year={2019},
  doi={10.1016/j.cub.2018.12.019},
  title={Threshold-Based Ordering of Sequential Actions during Drosophila Courtship},
  number={3},
  volume={29},
  issn={0960-9822},
  journal={Current biology},
  pages={426--434.e1–e6},
  author={McKellar, Claire E. and Lillvis, Joshua L. and Bath, Daniel and Fitzgerald, James E. and Cannon, John G. and Simpson, Julie H. and Dickson, Barry J.}
}
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