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Left-right cortical asymmetries of regional cerebral blood flow during listening to words

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  1. Failure of normal development of central drive to ankle dorsiflexors relates to gait deficits in children with cerebral palsy

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  2. Timing-dependent modulation of the posterior parietal cortex-primary motor cortex pathway by sensorimotor training

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  3. Impaired transmission in the corticospinal tract and gait disability in spinal cord injured persons

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  4. Principal cell spiking, postsynaptic excitation, and oxygen consumption in the rat cerebellar cortex

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  5. Acute changes in motor cortical excitability during slow oscillatory and constant anodal transcranial direct current stimulation

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  1. Dopamine D(2) receptor quantification in extrastriatal brain regions using [(123)I]epidepride with bolus/infusion

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  2. Vestibularis-schwannomers diagnostik og vaekst bedømt ved SPECT kombineret med TL-201 Thallium

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  3. Activation-induced resetting of cerebral oxygen and glucose uptake in the rat

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  4. Activation-induced resetting of cerebral oxygen and glucose uptak in the rat

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  5. SPECT og PET i neurobiologien

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1. Regional cerebral blood flow (rCBF) was measured during rest and during listening to simple words. The xenon-133 intracarotid technique was used and results were obtained from 254 regions of seven right hemispheres and seven left hemispheres. The measurements were performed just after carotid angiography, carried out to exclude space occupying lesions. In all subjects the angiogram was normal. All were right handed. 2. Mean hemispheric blood flow of both left and right hemispheres increased 10% from the resting measurement during the listening task. This increase was due in part to activation of the entire hemisphere. The focal rCBF increases were localized to the superior part of the temporal regions, the prefrontal regions, the frontal eye fields, and the orbitofrontal regions. Significant asymmetries were found in particular in the superior temporal region with the left side showing a more widespread and intense increase, averaging 29% as compared to 18% on the right side. This left-sided dominance during verbal stimulation should be compared to the right-sided dominance of rCBF during nonverbal sound discrimination reported by Roland et al. (25, 26), who used precisely the same technique as in the present study.
Original languageEnglish
JournalJournal of Neurophysiology
Volume48
Issue number2
Pages (from-to)458-66
Number of pages9
ISSN0022-3077
Publication statusPublished - Aug 1982

    Research areas

  • Adult, Aged, Cerebral Cortex, Dichotic Listening Tests, Dominance, Cerebral, Frontal Lobe, Humans, Middle Aged, Parietal Lobe, Regional Blood Flow, Speech Perception, Temporal Lobe

ID: 39051640