A single optimum degree of hemispheric specialisation in two tasks, in two UK national birth cohorts.
How differences between the two sides of the brain (or 'laterality') relate to level of function are important components of theories of the origin and purpose of hemispheric asymmetry, although different measures show different relationships, and this heterogeneity makes discerning any un...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
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2006
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| _version_ | 1797075592597733376 |
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| author | Leask, S Crow, T |
| author_facet | Leask, S Crow, T |
| author_sort | Leask, S |
| collection | OXFORD |
| description | How differences between the two sides of the brain (or 'laterality') relate to level of function are important components of theories of the origin and purpose of hemispheric asymmetry, although different measures show different relationships, and this heterogeneity makes discerning any underlying relationships a difficult task. There are some exceptions, for example it has been concluded that increasing lateralization (eg of hand skill or planum temporale area) occurs at the expense of the non-dominant hemisphere. However, we have previously demonstrated this latter relationship to be an artefact: a consequence of plotting two variables against each other, that are not independent of each other [Leask, S. J., and Crow, T. J. (1997) How far does the brain lateralize? An unbiased method for determining the optimum degree of hemispheric specialisation. Neuropsychologia, 36, 1275-1282; Mazoyer, B. M., and Tzourio-Mazoyer, N. G. (2004). Title Planum temporale asymmetry and models of dominance for language: a reappraisal. Neuroreport, 15, 1057-1059]. Two approaches to discerning any underlying relationships are presented in data from over 20,000 10- and 11-year olds from the 1958 and 1970 UK national cohort studies. These demonstrate that maximal performance, both cognitive and hand function, is found in association with one particular degree of functional lateralization. |
| first_indexed | 2024-03-06T23:52:30Z |
| format | Journal article |
| id | oxford-uuid:73157f96-a9fd-460f-b293-51de558d0da7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:52:30Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:73157f96-a9fd-460f-b293-51de558d0da72022-03-26T19:54:11ZA single optimum degree of hemispheric specialisation in two tasks, in two UK national birth cohorts.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:73157f96-a9fd-460f-b293-51de558d0da7EnglishSymplectic Elements at Oxford2006Leask, SCrow, THow differences between the two sides of the brain (or 'laterality') relate to level of function are important components of theories of the origin and purpose of hemispheric asymmetry, although different measures show different relationships, and this heterogeneity makes discerning any underlying relationships a difficult task. There are some exceptions, for example it has been concluded that increasing lateralization (eg of hand skill or planum temporale area) occurs at the expense of the non-dominant hemisphere. However, we have previously demonstrated this latter relationship to be an artefact: a consequence of plotting two variables against each other, that are not independent of each other [Leask, S. J., and Crow, T. J. (1997) How far does the brain lateralize? An unbiased method for determining the optimum degree of hemispheric specialisation. Neuropsychologia, 36, 1275-1282; Mazoyer, B. M., and Tzourio-Mazoyer, N. G. (2004). Title Planum temporale asymmetry and models of dominance for language: a reappraisal. Neuroreport, 15, 1057-1059]. Two approaches to discerning any underlying relationships are presented in data from over 20,000 10- and 11-year olds from the 1958 and 1970 UK national cohort studies. These demonstrate that maximal performance, both cognitive and hand function, is found in association with one particular degree of functional lateralization. |
| spellingShingle | Leask, S Crow, T A single optimum degree of hemispheric specialisation in two tasks, in two UK national birth cohorts. |
| title | A single optimum degree of hemispheric specialisation in two tasks, in two UK national birth cohorts. |
| title_full | A single optimum degree of hemispheric specialisation in two tasks, in two UK national birth cohorts. |
| title_fullStr | A single optimum degree of hemispheric specialisation in two tasks, in two UK national birth cohorts. |
| title_full_unstemmed | A single optimum degree of hemispheric specialisation in two tasks, in two UK national birth cohorts. |
| title_short | A single optimum degree of hemispheric specialisation in two tasks, in two UK national birth cohorts. |
| title_sort | single optimum degree of hemispheric specialisation in two tasks in two uk national birth cohorts |
| work_keys_str_mv | AT leasks asingleoptimumdegreeofhemisphericspecialisationintwotasksintwouknationalbirthcohorts AT crowt asingleoptimumdegreeofhemisphericspecialisationintwotasksintwouknationalbirthcohorts AT leasks singleoptimumdegreeofhemisphericspecialisationintwotasksintwouknationalbirthcohorts AT crowt singleoptimumdegreeofhemisphericspecialisationintwotasksintwouknationalbirthcohorts |