期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 111, 期 24, 页码 8949-8954出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1408039111
关键词
navigation; course-setting; shortcuts; terrain map; circadian
资金
- Royal Society of New Zealand Marsden [UOA07-212]
- Deutsche Forschungsgemeinschaft [Me 365/34-2]
- Hertie Gemeinnutzige Stiftung
- Dr. Klaus Tschira Stiftung
- Joint Program Germany-New Zealand (Internationale Zusammenarbeit Neuseeland-Deutschland) [01DR12054]
- Royal Society of New Zealand New Zealand-Germany ST programme [FRG11-27]
Mammals navigate by means of a metric cognitive map. Insects, most notably bees and ants, are also impressive navigators. The question whether they, too, have a metric cognitive map is important to cognitive science and neuroscience. Experimentally captured and displaced bees often depart from the release site in the compass direction they were bent on before their capture, even though this no longer heads them toward their goal. When they discover their error, however, the bees set off more or less directly toward their goal. This ability to orient toward a goal from an arbitrary point in the familiar environment is evidence that they have an integrated metric map of the experienced environment. We report a test of an alternative hypothesis, which is that all the bees have in memory is a collection of snapshots that enable them to recognize different landmarks and, associated with each such snapshot, a sun-compass-referenced home vector derived from dead reckoning done before and after previous visits to the landmark. We show that a large shift in the sun-compass rapidly induced by general anesthesia does not alter the accuracy or speed of the homeward-oriented flight made after the bees discover the error in their initial postrelease flight. This result rules out the sun-referenced home-vector hypothesis, further strengthening the now extensive evidence for a metric cognitive map in bees.
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