Reach and posture hand preferences during arboreal feeding in sifakas (Propithecus sp.): A test of the postural origins theory of behavioral lateralization
| Autor: | Kyle S Kraiter, Gina Ferra, Garrett W. Milliken, Courtney L Ross |
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| Rok vydání: | 2005 |
| Předmět: |
Male
medicine.medical_specialty Arboreal locomotion Posture Propithecus Captivity Context (language use) Choice Behavior Functional Laterality Lateralization of brain function Developmental psychology Physical medicine and rehabilitation Propithecus sp medicine Animals Ecology Evolution Behavior and Systematics Behavior Animal biology Brain Feeding Behavior biology.organism_classification Strepsirhini Motor Skills Propithecus tattersalli Laterality Female Psychology (miscellaneous) Psychological Theory Psychology |
| Zdroj: | Journal of Comparative Psychology. 119:430-439 |
| ISSN: | 1939-2087 0735-7036 |
| DOI: | 10.1037/0735-7036.119.4.430 |
| Popis: | Sixteen sifakas (11 Propithecus verreauxi coquereli, 2 Propithecus verreauxi verreauxi form majori, and 3 Propithecus tattersalli) were videotaped as they fed on leaves in an arboreal context. The hand used to feed and the hand used to maintain postural stability was coded. For each subject, the lateral bias of the hand used to feed was opposite the hand used in postural support. Seven sifakas displayed no bias for feeding or posture-related hand use, 7 sifakas displayed significant feeding-related reach preferences for pulling branches to the mouth (5 left- and 2 right-hand preferences), and 9 sifakas exhibited significant hand preferences for postural support (2 left-, 7 right-hand preferent). Although these data do not strongly support the postural origins theory of behavioral lateralization, the modal preference pattern for sifakas that displayed significant hand preferences for posture and feeding involve a left bias for feeding and a right bias for postural support. s reserved). |
| Databáze: | OpenAIRE |
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