Priming vs. rhyming : orthographic and phonological representations in the left and right hemispheres

Lindell, Annukka K. and Lum, Jarrad A.G. 2008, Priming vs. rhyming : orthographic and phonological representations in the left and right hemispheres, Brain and cognition, vol. 68, no. 2, pp. 193-203, doi: 10.1016/j.bandc.2008.04.005.

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Title Priming vs. rhyming : orthographic and phonological representations in the left and right hemispheres
Author(s) Lindell, Annukka K.
Lum, Jarrad A.G.ORCID iD for Lum, Jarrad A.G.
Journal name Brain and cognition
Volume number 68
Issue number 2
Start page 193
End page 203
Total pages 11
Publisher Academic Press (Elsevier)
Place of publication New York, N.Y.
Publication date 2008-11
ISSN 0278-2626
Keyword(s) word recognition
visual half-field
Summary The right cerebral hemisphere has long been argued to lack phonological processing capacity. Recently, however, a sex difference in the cortical representation of phonology has been proposed, suggesting discrete left hemisphere lateralization in males and more distributed, bilateral representation of function in females. To evaluate this hypothesis and shed light on sex differences in the phonological processing capabilities of the left and right hemispheres, we conducted two experiments. Experiment 1 assessed phonological activation implicitly (masked homophone priming), testing 52 (M = 25, F = 27; mean age 19.23 years, SD 1.64 years) strongly right-handed participants. Experiment 2 subsequently assessed the explicit recruitment of phonology (rhyme judgement), testing 50 (M = 25, F = 25; mean age 19.67 years, SD 2.05 years) strongly right-handed participants. In both experiments the orthographic overlap between stimulus pairs was strictly controlled using DICE [Brew, C., & McKelvie, D. (1996). Word-pair extraction for lexicography. In K. Oflazer & H. Somers (Eds.), Proceedings of the second international conference on new methods in language processing (pp. 45–55). Ankara: VCH], such that pairs shared (a) high orthographic and phonological similarity (e.g., not–KNOT); (b) high orthographic and low phonological similarity (e.g., pint–HINT); (c) low orthographic and high phonological similarity (e.g., use–EWES); or (d) low orthographic and low phonological similarity (e.g., kind–DONE). As anticipated, high orthographic similarity facilitated both left and right hemisphere performance, whereas the left hemisphere showed greater facility when phonological similarity was high. This difference in hemispheric processing of phonological representations was especially pronounced in males, whereas female performance was far less sensitive to visual field of presentation across both implicit and explicit phonological tasks. As such, the findings offer behavioural evidence indicating that though both hemispheres are capable of orthographic analysis, phonological processing is discretely lateralised to the left hemisphere in males, but available in both the left and right hemisphere in females.
Language eng
DOI 10.1016/j.bandc.2008.04.005
Field of Research 170103 Educational Psychology
Socio Economic Objective 970117 Expanding Knowledge in Psychology and Cognitive Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2008, Academic Press (Elsevier)
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Document type: Journal Article
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School of Psychology
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