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Colateralization of Broca's Area and the Visual Word form Area in Left-Handers: fMRI Evidence
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Van der Haegen, Lise; Cai, Qing; Brysbaert, Marc – Brain and Language, 2012
Language production has been found to be lateralized in the left hemisphere (LH) for 95% of right-handed people and about 75% of left-handers. The prevalence of atypical right hemispheric (RH) or bilateral lateralization for reading and colateralization of production with word reading laterality has never been tested in a large sample. In this…
Descriptors: Evidence, Word Recognition, Phonology, Handedness
Further fMRI Validation of the Visual Half Field Technique as an Indicator of Language Laterality: A Large-Group Analysis
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Van der Haegen, Lise; Cai, Qing; Seurinck, Ruth; Brysbaert, Marc – Neuropsychologia, 2011
The best established lateralized cerebral function is speech production, with the majority of the population having left hemisphere dominance. An important question is how to best assess the laterality of this function. Neuroimaging techniques such as functional Magnetic Resonance Imaging (fMRI) are increasingly used in clinical settings to…
Descriptors: Cognitive Style, Brain Hemisphere Functions, Speech, Diagnostic Tests
Auditory Space Perception in Left- and Right-Handers
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Ocklenburg, Sebastian; Hirnstein, Marco; Hausmann, Markus; Lewald, Jorg – Brain and Cognition, 2010
Several studies have shown that handedness has an impact on visual spatial abilities. Here we investigated the effect of laterality on auditory space perception. Participants (33 right-handers, 20 left-handers) completed two tasks of sound localization. In a dark, anechoic, and sound-proof room, sound stimuli (broadband noise) were presented via…
Descriptors: Spatial Ability, Handedness, Lateral Dominance, Auditory Perception
Sex Differences in Face Processing: Are Women Less Lateralized and Faster than Men?
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Godard, Ornella; Fiori, Nicole – Brain and Cognition, 2010
The aim of this study was to determine the influence of sex on hemispheric asymmetry and cooperation in a face recognition task. We used a masked priming paradigm in which the prime stimulus was centrally presented; it could be a bisymmetric face or a hemi-face in which facial information was presented in the left or the right visual field and…
Descriptors: Brain Hemisphere Functions, Task Analysis, Recognition (Psychology), Gender Differences
Sex Specific Effect of Prenatal Testosterone on Language Lateralization in Children
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Lust, J. M.; Geuze, R. H.; Van de Beek, C.; Cohen-Kettenis, P. T.; Groothuis, A. G. G.; Bouma, A. – Neuropsychologia, 2010
Brain lateralization refers to the division of labour between the two hemispheres in controlling a wide array of functions and is remarkably well developed in humans. Based on sex differences in lateralization of handedness and language, several hypotheses have postulated an effect of prenatal exposure to testosterone on human lateralization…
Descriptors: Brain Hemisphere Functions, Gender Differences, Human Body, Language Processing
Recognition and Mental Manipulation of Body Parts Dissociate in Locked-In Syndrome
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Conson, Massimiliano; Pistoia, Francesca; Sara, Marco; Grossi, Dario; Trojano, Luigi – Brain and Cognition, 2010
Several lines of evidence demonstrate that the motor system is involved in motor simulation of actions, but some uncertainty exists about the consequences of lesions of descending motor pathways on mental imagery tasks. Moreover, recent findings suggest that the motor system could also have a role in recognition of body parts. To address these…
Descriptors: Imagery, Patients, Spatial Ability, Psychomotor Skills