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Brain Functional Asymmetry of Chimpanzees (Pan troglodytes): the Example of Auditory Laterality

100%
Szymańska J., Trojan M., Jakucińska A., Wejchert K., Kapusta M., Sikorska J.
Polish Psychological Bulletin
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2017
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issue 1
87-92
EN
The aim of this study was to verify whether chimpanzees (Pan troglodytes) demonstrate an auditory laterality during the orientation reaction, and which hemisphere is responsible for processing the emotional stimuli and which for the species-specific vocalizations. The study involved nine chimpanzees from the Warsaw Municipal Zoological Garden. They were tested individually in their bedrooms. Chimpanzees approached a tube filled with food, located in the centre of the cage. Randomly selected sounds were played from the speakers when the subject was focused on getting food. Individual reactions were observed and outcomes reported. The four types of sound used: thunderstorm, dog barking, chimpanzee vocalization and a zoo-keeper’s voice. To test whether chimpanzees demonstrate auditory laterality we used a single sample X2 test. The existence of auditory laterality has been confirmed. The sound of the storm caused the orientation reaction to the left, while chimpanzee vocalization – to the right. On this basis we can conclude that among chimpanzees, arousing stimuli are being processed by the right hemisphere, and species-specific vocalizations by the left. However, the set of stimuli was limited so the study did not unequivocally resolve this issue.
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Asymetria i symetria funkcjonalna u dzieci w wieku 11–13 lat

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Choptiany M.
Sport i Turystyka. Środkowoeuropejskie Czasopismo Naukowe
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2018
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vol. 1
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issue 2
79-91
EN
The aim of the work is to determine the asymmetry and functional symmetry, which concerns handedness and footedness of children aged 11–13. The research covered 955 girls and boys from the Lubuskie Voivodeship. The material was collected in 2016–2017 by the author. The research tool was a questionnaire about specific activities performed by the respondents. The collected ma-terial was developed statistically, the number of individual symmetries, asymmetries in specific activities and their point value were calculated numerically and as a percentage.
PL
Celem pracy jest określenie asymetrii i symetrii funkcjonalnej, która dotyczy ręczności i nożności u dzieci w wieku 11–13 lat. Badaniami objęto 955 dziewcząt i chłopców z terenów woje-wództwa lubuskiego. Materiał został zebrany w latach 2016–2017 przez autorkę. Narzędziem badawczym był kwestionariusz ankiety dotyczący określonych czynności, które wykonywali badani. Zebrany materiał został opracowany statystycznie, wyliczono liczbowo i procentowo udział poszczególnych symetrii, asymetrii w określonych czynnościach oraz ich wartość punktową.
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