Neuromagnetic functional coupling during dichotic listening of speech sounds.

Neuromagnetic functional coupling during dichotic listening of speech sounds. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Neuromagnetic functional coupling during dichotic listening of speech sounds. Abstract Text:

The present magnetoencephalography (MEG) study tested the hypothesis of a phase synchronization (functional coupling) of cortical alpha rhythms (about 6-12 Hz) within a "speech" cortical neural network comprising bilateral primary auditory cortex and Wernicke's areas, during dichotic listening (DL) of consonant-vowel (CV) syllables. Dichotic stimulation was done with the CV-syllable pairs /da/-/ba/ (true DL, yielded by stimuli having high spectral overlap) and /da/-/ka/ (sham DL, obtained with stimuli having poor spectral overlap). Whole-head MEG activity (165 sensors) was recorded from 10 healthy right-handed non-musicians showing right ear advantage in a speech DL task. Functional coupling of alpha rhythms was defined as the spectral coherence at the following bands: alpha 1 (about 6-8 Hz), alpha 2 (about 8-10 Hz), and alpha 3 (about 10-12) with respect to the peak of individual alpha frequency. Results showed an inverse pattern of functional coupling: during DL of speech sounds, spectral coherence of the high-band alpha rhythms increased between left auditory and Wernicke's areas with respect to sham DL, whereas it decreased between left and right auditory areas. The increase of functional coupling within the left hemisphere would underlie the processing of the syllable presented to the right ear, which arrives to the left auditory cortex without the interference of the other syllable presented to the left ear. Conversely, the decrease of inter-hemispherical coupling of the high-band alpha might be due to the fact that the two auditory cortices do not receive the same information from the ears during DL. These results suggest that functional coupling of alpha rhythms can constitute a neural substrate for the lateralization of auditory stimuli during DL. Hum Brain Mapp 2008. (c) 2007 Wiley-Liss, Inc.

Neuromagnetic functional coupling during dichotic listening of speech sounds. Publishing Authors By Initials

For similar abstracts research abstracts see: abstracts research

PUBMED ID PMID:

MEDLINE DATE:

Neuromagnetic functional coupling during dichotic listening of speech sounds. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Human brain mapping

VOLUME: 29

Page Numbers: 253-64

Journal Abbreviation:

ISSN: 1065-9471

DAY: 28

MONTH: Mar

YEAR: 2008

Neuromagnetic functional coupling during dichotic listening of speech sounds. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 9419065

Neuromagnetic functional coupling during dichotic listening of speech sounds. Keywords Mesh Terms:

KEYWORDS:

MESH TERMS:

Chemical & Substance for Abstract: Neuromagnetic functional coupling during dichotic listening of speech sounds. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for Neuromagnetic functional coupling during dichotic listening of speech sounds.

AFFILIATION: ITAB, Istituto di Tecnologie Avanzate Biomediche, Fondazione "Università G. D'Annunzio," and Dipartimento di Scienze Biomediche, Università "G. D'Annunzio," Chieti, Italy.

Country: United States

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: Hum Brain Mapp

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Neuromagnetic functional coupling during dichotic listening of speech sounds Related Publications

• A cartesian time--frequency approach to reveal brain interaction dynamics.
• A crucial role for tryptophan catabolism at the host/Candida albicans interface.
• A frontoparietal network for spatial attention reorienting in the auditory domain: a human fMRI/MEG study of functional and temporal dynamics.
• A-magnetic optic-mechanical device to quantify finger kinematics for fMRI studies of bimanual coordination.
• Animal models for candidiasis.
• Biphasic effect of extra-reticular Mg2+ on hepatic G6P transport and hydrolysis.
• Combined thermal and laser Doppler imaging in the assessment of cutaneous tissue perfusion.
• Cytokines in candidiasis and aspergillosis.
• Effect of repeated doses of ethanol on hepatic Mg2+ homeostasis and mobilization.
• Field-warp registration for biomedical high-resolution thermal infrared images.
• Functional characterization of two distinct Mg(2+) extrusion mechanisms in cardiac sarcolemmal vesicles.
• Functional infrared imaging in medicine: a quantitative diagnostic approach.
• Functional yet balanced reactivity to Candida albicans requires TRIF, MyD88, and IDO-dependent inhibition of Rorc.
• Human neural systems for conceptual knowledge of proper object use: a functional magnetic resonance imaging study.
• IL-23 and the Th17 pathway promote inflammation and impair antifungal immune resistance.
• Involvement of ERK1/2 and p38 in Mg2+ accumulation in liver cells.
• Lack of Toll IL-1R8 Exacerbates Th17 Cell Responses in Fungal Infection.
• Lack of insulin impairs Mg2+ homeostasis and transport in cardiac cells of streptozotocin-injected diabetic rats.
• Magnesium homeostasis in mammalian cells.
• Neuromagnetic functional coupling during dichotic listening of speech sounds.
• Physical activity and risk of hot flashes among women in midlife.
• Provision of antifungal immunity and concomitant alloantigen tolerization by conditioned dendritic cells in experimental hematopoietic transplantation.
• Superimposition of thermal imaging to visual imaging using homography.
• Thermal signatures of emotional arousal: a functional infrared imaging study.
• Thymosin {alpha}1 activates the TLR9/MyD88/IRF7-dependent murine cytomegalovirus sensing for induction of anti-viral responses in vivo.
• Tonotopic organization of the human auditory cortex revealed by steady state neuromagnetic measurements.
• [Action of antiphlogistic corticoids on the dynamics of inflammatory processes.]
• [Action of glycocorticoids on mast cells in the connective tissue of an experimental granuloma in the rat.]
• [Comparative inhibiting action of cortisone and hydrocortisone on inflammatory granuloma and local and generalized eosinophilia during fixation abscess in the rat.]
• [The effect of anti-inflammatory corticoids on the fibroblasts and on the mucopolysaccharides of the fixation abscess in the rat.]