Rapid adjustment of pecking trajectory to prism-induced visual shifts in crows as compared with pigeons

Hiroshi Matsui, Ei Ichi Izawa

研究成果: Article査読

4 被引用数 (Scopus)

抄録

Pecking in birds is analogous to reaching and grasping movements in primates. Earlier studies on visuomotor control in birds, which were conducted mostly in pigeons, suggested that avian pecking is controlled feedforwardly, and is out of the control of visual guidance during movement. However, recent studies using crows suggested a role of vision in pecking control during movement. To unveil what visuomotor mechanisms underlie the flexibility of pecking in crows, we examined whether pigeons and crows adjust their pecking to the visual distortion induced by prisms. Because prisms induce visual shifts of object positions, birds were required to adjust their movements. Pecking kinematics were examined before and after attaching prisms in front of the birds' eyes. Analysis of lateral deviation caused by the prisms showed that crows rapidly adjusted their pecking trajectories, but pigeons did so slowly. Angular displacement also increased in pigeons after attachment of the prism, but decreased in crows. These responses to prisms were consistent among individuals in pigeons but varied in crows, though the adjustment of pecking commonly succeeded in crows. These results suggest that pecking in pigeons predominantly involves feedforward control and that the movement is determined depending on the visual information available before the initiation of pecking. In contrast, the results from crows suggest that their pecking trajectories are corrected during the movement, supporting on-line visual control. Our findings provide the first evidence to suggest the on-line visual control of pecking in birds.

本文言語English
論文番号jeb182345
ジャーナルJournal of Experimental Biology
222
4
DOI
出版ステータスPublished - 2019 2

ASJC Scopus subject areas

  • 生態、進化、行動および分類学
  • 生理学
  • 水圏科学
  • 動物科学および動物学
  • 分子生物学
  • 昆虫科学

フィンガープリント

「Rapid adjustment of pecking trajectory to prism-induced visual shifts in crows as compared with pigeons」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル