کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8977524 1106005 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Left hemispheric advantage for numerical abilities in the bottlenose dolphin
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
Left hemispheric advantage for numerical abilities in the bottlenose dolphin
چکیده انگلیسی
In a two-choice discrimination paradigm, a bottlenose dolphin discriminated relational dimensions between visual numerosity stimuli under monocular viewing conditions. After prior binocular acquisition of the task, two monocular test series with different number stimuli were conducted. In accordance with recent studies on visual lateralization in the bottlenose dolphin, our results revealed an overall advantage of the right visual field. Due to the complete decussation of the optic nerve fibers, this suggests a specialization of the left hemisphere for analysing relational features between stimuli as required in tests for numerical abilities. These processes are typically right hemisphere-based in other mammals (including humans) and birds. The present data provide further evidence for a general right visual field advantage in bottlenose dolphins for visual information processing. It is thus assumed that dolphins possess a unique functional architecture of their cerebral asymmetries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Behavioural Processes - Volume 68, Issue 2, 28 February 2005, Pages 179-184
نویسندگان
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