Neuroanatomical localization of the motor hand area with magnetic resonance imaging: the left hemisphere is larger in great apes.
Magnetic resonance images of the brain were obtained from 2 gorilla (Gorilla gorilla gorilla), 4 orangutans (Pongo pygmaeus), 14 chimpanzees (Pan troglodytes), and 4 bonobos (Pan paniscus). The region on the motor cortex of humans identified as responsible for motor skill of the hand (the “knob”) wa...
| Publicado en: | Behavioral Neuroscience Vol. 115; no. 5; pp. 1159 - 1165 |
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| Autores principales: | , |
| Formato: | Artículo |
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American Psychological Association
October 2001
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=506412550&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 506412550 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 07357044 BEN jtl: Behavioral Neuroscience issn: 07357044 maglogo: N pubinfo: dt: October 2001 vid: 115 iid: 5 pid: 34 pub: American Psychological Association artinfo: ui: 506412550 10.1037/0735-7044.115.5.1159 ppf: 1159 ppct: 6 formats: tig: atl: Neuroanatomical localization of the motor hand area with magnetic resonance imaging: the left hemisphere is larger in great apes. aug: au: Hopkins, William D. Pilcher, Dawn L. su: Magnetic resonance imaging Brain function localization Psychology, Comparative Motor cortex sug: subj: Magnetic resonance imaging Brain function localization Psychology, Comparative Motor cortex ab: Magnetic resonance images of the brain were obtained from 2 gorilla (Gorilla gorilla gorilla), 4 orangutans (Pongo pygmaeus), 14 chimpanzees (Pan troglodytes), and 4 bonobos (Pan paniscus). The region on the motor cortex of humans identified as responsible for motor skill of the hand (the “knob”) was identified in this sample on consecutive 1-mm axial scans. The shape of the knob area was traced on each scan from both hemispheres, and the area from all scans was summed to calculate the knob volume. The width of the knob was also measured and correlated highly with knob volume. A significant population-level leftward asymmetry in the volume and width of the knob was revealed (p < .05). Species differences in knob asymmetry and overall volume were not significant, but the variability in overall volume between species was substantial. Selection for the evolution of a neuroanatomical representation of the hand in primates and an evolutionary trend toward population-level right handedness are discussed. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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