Exploring the relationship between cerebellar asymmetry and handedness in chimpanzees (Pan troglodytes) and capuchins (Cebus apella).
A comparative study of chimpanzee (Pan troglodytes) and capuchin monkey (Cebus apella) cerebellar asymmetry and its relationship to handedness was conducted. Magnetic resonance images of the brain and behavioral data on a coordinated bimanual task were obtained from 16 chimpanzees and 11 capuchins. Chimpanzees displayed a greater rightward bias of the posterior cerebellum and capuchins displayed a greater leftward bias of the anterior cerebellum. Cerebellar asymmetries were significantly associated with handedness in capuchins but not chimpanzees, and this effect was most pronounced in right-handed capuchins.
Phillips
Kimberley A
KA
Department of Psychology, Hiram College, 11715 Garfield Road, Hiram, OH 44234, USA. phillipsk@hiram.edu
Hopkins
William D
WD
D000818:Animals; D001522:Behavior, Animal; D001931:Brain Mapping; D002428:Cebus / Q000033:anatomy & histology / Q000502:physiology*; D002531:Cerebellum / Q000502:physiology*; D007839:Functional Laterality / Q000502:physiology*; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods; D002679:Pan troglodytes / Q000033:anatomy & histology / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology*