کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6370197 1623847 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A model for navigational errors in complex environmental fields
ترجمه فارسی عنوان
یک مدل خطاهای ناوبری در زمینه های پیچیده محیط زیست
کلمات کلیدی
جهت یابی، کبوتر تعیین موقعیت، نقشه شناختی، خطاهای جهت گیری،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
چکیده انگلیسی
Many animals are believed to navigate using environmental signals such as light, sound, odours and magnetic fields. However, animals rarely navigate directly to their target location, but instead make a series of navigational errors which are corrected during transit. In previous work, we introduced a model showing that differences between an animal׳s 'cognitive map' of the environmental signals used for navigation and the true nature of these signals caused a systematic pattern in orientation errors when navigation begins. The model successfully predicted the pattern of errors seen in previously collected data from homing pigeons, but underestimated the amplitude of the errors. In this paper, we extend our previous model to include more complicated distortions of the contour lines of the environmental signals. Specifically, we consider the occurrence of critical points in the fields describing the signals. We consider three scenarios and compute orientation errors as parameters are varied in each case. We show that the occurrence of critical points can be associated with large variations in initial orientation errors over a small geographic area. We discuss the implications that these results have on predicting how animals will behave when encountering complex distortions in any environmental signals they use to navigate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Theoretical Biology - Volume 363, 21 December 2014, Pages 134-144
نویسندگان
, ,