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Bumblebees measure optic flow for position and speed control flexibly within the frontal visual field.

Linander, Nellie LU ; Dacke, Marie LU and Baird, Emily LU (2015) In Journal of Experimental Biology 218(7). p.1051-1059
Abstract
When flying through narrow spaces, insects control their position by balancing the magnitude of apparent image motion (optic flow) experienced in each eye and their speed by holding this value about a desired set-point. Previously, it has been shown that when bumblebees encounter sudden changes in the proximity to nearby surfaces - as indicated by a change in the magnitude of optic flow on each side of the visual field - they adjust their flight speed well before the change, suggesting that they measure optic flow for speed control at low visual angles in the frontal visual field. Here, we investigate the effect that sudden changes in the magnitude of translational optic flow have on both position and speed control in bumblebees if these... (More)
When flying through narrow spaces, insects control their position by balancing the magnitude of apparent image motion (optic flow) experienced in each eye and their speed by holding this value about a desired set-point. Previously, it has been shown that when bumblebees encounter sudden changes in the proximity to nearby surfaces - as indicated by a change in the magnitude of optic flow on each side of the visual field - they adjust their flight speed well before the change, suggesting that they measure optic flow for speed control at low visual angles in the frontal visual field. Here, we investigate the effect that sudden changes in the magnitude of translational optic flow have on both position and speed control in bumblebees if these changes are asymmetrical, that is, if they occur only on one side of the visual field. Our results reveal that the visual region over which bumblebees respond to optic flow cues for flight control is not dictated by a set viewing angle. Instead, they appear to use the maximum magnitude of translational optic flow experienced in the frontal visual field. This strategy ensures that bumblebees use the translational optic flow generated by the nearest obstacles - that is, those with which they have the highest risk of colliding - to control flight. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Experimental Biology
volume
218
issue
7
pages
1051 - 1059
publisher
The Company of Biologists Ltd
external identifiers
  • pmid:25657205
  • wos:000354113300020
  • scopus:84927587798
ISSN
1477-9145
DOI
10.1242/jeb.107409
language
English
LU publication?
yes
id
de4300f1-6416-4925-99a4-0c5db7d5cc85 (old id 5145296)
date added to LUP
2015-03-09 11:11:12
date last changed
2017-10-22 03:23:58
@article{de4300f1-6416-4925-99a4-0c5db7d5cc85,
  abstract     = {When flying through narrow spaces, insects control their position by balancing the magnitude of apparent image motion (optic flow) experienced in each eye and their speed by holding this value about a desired set-point. Previously, it has been shown that when bumblebees encounter sudden changes in the proximity to nearby surfaces - as indicated by a change in the magnitude of optic flow on each side of the visual field - they adjust their flight speed well before the change, suggesting that they measure optic flow for speed control at low visual angles in the frontal visual field. Here, we investigate the effect that sudden changes in the magnitude of translational optic flow have on both position and speed control in bumblebees if these changes are asymmetrical, that is, if they occur only on one side of the visual field. Our results reveal that the visual region over which bumblebees respond to optic flow cues for flight control is not dictated by a set viewing angle. Instead, they appear to use the maximum magnitude of translational optic flow experienced in the frontal visual field. This strategy ensures that bumblebees use the translational optic flow generated by the nearest obstacles - that is, those with which they have the highest risk of colliding - to control flight.},
  author       = {Linander, Nellie and Dacke, Marie and Baird, Emily},
  issn         = {1477-9145},
  language     = {eng},
  number       = {7},
  pages        = {1051--1059},
  publisher    = {The Company of Biologists Ltd},
  series       = {Journal of Experimental Biology},
  title        = {Bumblebees measure optic flow for position and speed control flexibly within the frontal visual field.},
  url          = {http://dx.doi.org/10.1242/jeb.107409},
  volume       = {218},
  year         = {2015},
}