QUICK SEARCH:   [advanced] Author: Keyword(s):
Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents

This Article Summary Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Prior, H. Articles by Güntürkün, O. Search for Related Content PubMed PubMed Citation Articles by Prior, H. Articles by Güntürkün, O. Social Bookmarking                         What's this?

Orientation and lateralized cue use in pigeons navigating a large indoor environment

Helmut Prior^*, Frank Lingenauber, Jörg Nitschke and Onur Güntürkün

AE Biopsychologie, Ruhr-Universität Bochum, 44780 Bochum, Germany

View larger version (20K): [in a new window]   Fig. 1. View of the arena with the cardboard containers making up the `horizon' shown as white squares. S, starting location during training, experiments 1 and 3; G, goal; L, prominent landmarks. The arrow from start to goal depicts a typical search path in experiment 1.

View larger version (8K): [in a new window]   Fig. 4. Mean bearings from new starting points A-D during experiment 2 in the binocular (solid arrow), left eye (dotted arrow), and right eye (broken arrow) conditions. From each location a similar `release site bias' occurred in the different visual conditions. Other symbols as in Figs 1, 2.

View larger version (7K): [in a new window]   Fig. 8. Mean bearings from two new starting points A and B with the left eye (broken arrow) and right eye (solid arrow) after translation of the landmark array in experiment 4. G, goal predicted by the global reference frame; G', goal predicted by the translated landmarks. For comparison, the direct routes to G and G' are indicated by a bold line. Other symbols as in Figs 1, 2.

View larger version (7K): [in a new window]   Fig. 2. Mean bearings during experiment 1 in the binocular (solid arrow), left eye (dotted arrow) and right eye (broken arrow) condition. le1, le2, first and second test, respectively, with the left eye; re1, re2, first and second test, respectively, with the right eye. For comparison, the most direct path to the goal G is indicated by a bold line. `Horizon' not shown. Other symbols as in Fig. 1.

View larger version (15K): [in a new window]   Fig. 3. Speed of reaching the goal from a familiar location in experiment 1 (means ± S.E.M., N=15). Performance was higher in the binocular condition, but similar with the left and the right eye. *Significant difference from binocular condition (P=<0.0001).

View larger version (26K): [in a new window]   Fig. 5. Speed of reaching the goal from four new locations (A, B, C, D) in experiment 2 (means ± S.E.M., N as indicated in parentheses). Differences between the left and right eye were not significant, but performance of binocular versus monocular vision at positions A-C were significantly different. See text for details.

View larger version (4K): [in a new window]   Fig. 6 . Mean bearings after removal of landmarks during experiment 3 in the binocular (solid arrow), left eye (dotted arrow), and right eye (broken arrow) condition. Other symbols as in Figs 1, 2.

View larger version (17K): [in a new window]   Fig. 7. Speed of reaching the goal after removal of prominent landmarks (experiment 3a) and after removal of local cues (experiment 3b) (means ± S.E.M., N=15. Removal of prominent landmarks impaired the birds when they used the right eye. **Right-eye only condition in experiment 3a was significantly different from all other monocular conditions in 3a and 3b (P<0.01). There was no difference between the other monocular conditions. See text for details.

View larger version (11K): [in a new window]   Fig. 9. Time to reach an area within a 0.5 m radius of goal G and length of the search path during the whole search period in experiment 4 (means ± S.E.M., N=15). The search paths using the right eye only were considerably longer (**P<0.01).

View larger version (17K): [in a new window]   Fig. 10. Search activity parallel to the short axis (A) and the long axis (B) of the arena in experiment 4. The arrows indicate the position of the goal as predicted by the global reference frame (G) or the translated landmarks (G'). With either eye, search maximum was at G. With the right eye, there was also search at G', while there was virtually no search at G' with the left eye. **Significant difference between use of right and left eye only at G' (Wilcoxon test, Z=-2.557, P<0.01).

CiteULike

Complore

Connotea

Del.icio.us

Digg

Reddit

Technorati

Twitter