Cerebral lateralization determines hand preferences in Australian parrots | Zendy

Culum Brown | Zendy; Maria Magat | Zendy

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Cerebral lateralization determines hand preferences in Australian parrots

Author(s) -

Culum Brown,

Maria Magat

Publication year - 2011

Publication title -

biology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.596

H-Index - 110

eISSN - 1744-957X

pISSN - 1744-9561

DOI - 10.1098/rsbl.2010.1121

Subject(s) - biology , preference , lateralization of brain function , trait , foot (prosody) , population , hand preference , laterality , zoology , ecology , evolutionary biology , demography , neuroscience , linguistics , philosophy , sociology , computer science , microeconomics , economics , programming language

Individual preference for the use of one limb over the other to explore the environment or manipulate objects is common trait among vertebrates. Here, we explore the hypothesis that limb preference is determined by the engagement of a particular cerebral hemisphere to analyse certain stimuli. We recorded the eye and foot preferences of 322 individuals from 16 species of Australian parrots while investigating potential food items. Across all species, eye preferences explained 99 per cent of the variation in foot use in Australian parrots. The vast majority of species showed significant relationships between eye and foot preferences at the population level.

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