Evaluating the Empirical Support for the Geschwind-Behan-Galaburda Model of Cerebral Lateralization

Bryden, M.P.; McManus, I. C.; Bulman-Fleming, M. Barbara

doi:10.1006/brcg.1994.1045

Cited by 210 publications

(116 citation statements)

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“…This theoretical framework would explain all of the observed sibling effects reported in Figure 1. Unfortunately, at present, there is no evidence for a relationship between prenatal hormones and hand preference in chimpanzees, and the findings in humans remain highly controversial (see Bryden, McManus, & Bulman-Fleming, 1994, and commentaries).…”

Section: Discussionmentioning

confidence: 99%

Heritability of hand preference in chimpanzees (Pan troglodytes): Evidence from a partial interspecies cross-fostering study.

Hopkins

1999

Journal of Comparative Psychology

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Heritability of hand preference was tested in a sample of 188 chimpanzees (Pan troglodytes). Hand preference was measured by coordinated bimanual actions, and concordance percentages were compared between parents and offspring and siblings. Among siblings, concordance percentages were compared for dyads in which both individuals were raised by chimpanzees, both were raised by humans, or 1 was raised in each environment. The results indicated population-level right hand preferences for coordinated bimanual actions. There were no significant associations in hand preference between parents and offspring. In full and maternal half siblings, concordance in hand preference was significantly greater than chance in mother-and human-reared individuals but not in cross-fostered dyads. The cumulative results suggest that the direction of hand preference is heritable in chimpanzees but the mechanism of transmission is not genetic. Several environmental explanations are proposed to explain the findings, including the potential role of maternal cradling bias and in utero fetal position.Approximately 75% to 90% of modern humans report themselves as being right-handed (Annett, 1985;Porac & Coren, 1981). The general view is that human right-handedness evolved within the past 2 to 5 million years, as evidenced by the archeological data suggesting righthand use in tool use and other activities in early hominids (Bradshaw & Rogers, 1993;Corballis, 1991). The pervasiveness of human right-handedness has led to numerous debates about the mechanisms involved in the expression of hand preference (B. Hopkins & Ronnqvist, 1998). Both genetic models (Annett, 1985;Corballis, 1997;Laland, Kumm, Van Horn, & Feldman, 1995;McManus, 1985;Yeo & Gangestad, 1993) and environmental models (Collins, 1985;Provins, 1997) have been proposed to explain the origin of human hand preference. The principal data in support of a genetic basis for hand preference are that it runs in families (Curt, De Agostini, Maccario, & Dellatolas, 1995;Laland et al., 1995;McGee & Cozad, 1980;McManus & Bryden, 1992) and that offspring typically exhibit patterns of hand preference more similar to their biological parents compared with offspring who have been adopted or raised by stepparents (Carter-Saltzman, 1980;Hicks & Kinsbourne, 1976).In contrast with humans, the historical view has been that nonhuman animals, particularly nonhuman primates, do not exhibit population-level handedness (see Ettlinger, 1988;Warren, 1980). In recent years, behavioral research in a variety of nonhuman primate species has revealed that population-level handedness can be found in some species for certain measures (Bradshaw & Rogers, 1993;Fagot & Vauclair, 1991;W. D. Hopkins, 1996b Studdert-Kennedy, & Lindblom, 1987;Ward & Hopkins, 1993). Notwithstanding, considerable disagreement remains about the interpretation of the findings in nonhuman primates as they pertain to human handedness. For instance, McGrew and Marchant (1997) argued that the evidence for population-level handedness in no...

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Section: Discussionmentioning

confidence: 99%

Heritability of hand preference in chimpanzees (Pan troglodytes): Evidence from a partial interspecies cross-fostering study.

Hopkins

1999

Journal of Comparative Psychology

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“…This theory has come under sharp attack (cf. Bryden, McManus, & Bulman-Fleming, 1994), and the evidence in support of the model is inconsistent. However, whether or not the Geschwind and Galaburda model best accounts for the associations just described, we cannot discount the existence of these associations, which suggest gifted children, child prodigies, and savants are not made from scratch but are born with unusual brains that enable rapid learning in a particular domain.…”

Section: Ellen Winnermentioning

confidence: 97%

The origins and ends of giftedness.

Winner¹

2000

American Psychologist

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“…The GBG hypothesis has many critics and opponents because of the controversial results obtained in the subsequent attempts by many researchers to prove the high prenatal testosterone theory [40,41], and especially because of the report of Grimshaw et al [42] that children exposed in utero to higher levels of testosterone were more likely to be right-handed. Recently, however, some studies (including our own investigation) using the finger length ratio (second to fourth digit) as a biomarker for the prenatal levels of testosterone have shown indirect evidence for a relationship between higher prenatal testosterone and left-handedness [43][44][45][46][47].…”

Section: Handedness-related Differencesmentioning

confidence: 99%

Brain asymmetry, immunity, handedness

et al. 2011

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AbstractThe principle of symmetry-asymmetry is widely presented in the structural and functional organization of the nonliving and living nature. One of the most complex manifestations of this principle is the left-right asymmetry of the human brain. The present review summarizes previous and contemporary literary data regarding the role of brain asymmetry in neuroimmunomodulation. Some handedness-related peculiarities are outlined additionally. Brain asymmetry is considered to be imprinted in the formation and regulation of the individual’s responses and relationships at an immunological level with the external and internal environment. The assumptions that the hemispheres modulate immune response in an asymmetric manner have been confirmed in experiments on animals. Some authors assume that the right hemisphere plays an indirect role in neuroimmunomodulation, controlling and suppressing the left hemispheric inductive signals.

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Evaluating the Empirical Support for the Geschwind-Behan-Galaburda Model of Cerebral Lateralization

Cited by 210 publications

References 0 publications

Heritability of hand preference in chimpanzees (Pan troglodytes): Evidence from a partial interspecies cross-fostering study.

Heritability of hand preference in chimpanzees (Pan troglodytes): Evidence from a partial interspecies cross-fostering study.

The origins and ends of giftedness.

Brain asymmetry, immunity, handedness

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