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Titolo:
AUDITORY M100 COMPONENT-1 - RELATIONSHIP TO HESCHLS GYRI
Autore:
REITE M; ADAMS M; SIMON J; TEALE P; SHEEDER J; RICHARDSON D; GRABBE R;
Indirizzi:
UNIV COLORADO,HLTH SCI CTR,DEPT PSYCHIAT,NEUROMAGNETISM LAB,4200 E 9TH AVE,BOX C268-68 DENVER CO 80206 UNIV COLORADO,HLTH SCI CTR,DEPT RADIOL DENVER CO 80262
Titolo Testata:
Cognitive brain research
fascicolo: 1, volume: 2, anno: 1994,
pagine: 13 - 20
SICI:
0926-6410(1994)2:1<13:AMC-RT>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLANUM TEMPORALE; SEX-DIFFERENCES; SOURCE LOCATION; CORTEX; DISTRIBUTIONS; LOCALIZATION; ASYMMETRY;
Keywords:
MAGNETOENCEPHALOGRAPHY; SUPERIOR TEMPORAL GYRUS; HESCHLS GYRUS; TEMPORAL LOBE; AUDITORY EVOKED FIELD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
M. Reite et al., "AUDITORY M100 COMPONENT-1 - RELATIONSHIP TO HESCHLS GYRI", Cognitive brain research, 2(1), 1994, pp. 13-20

Abstract

This study was designed to localize the neuroanatomic generator of the 100 ms latency magnetic auditory evoked field (EF) component (M100) activated by an unattended tone pip. Magnetic EFs in response to 25 msduration, 90 dB, 1 kHz tone pips were recorded from both hemispheres of nine normal adults, five males and four females, using a seven-channel second-order gradiometer. The source of the M100 was estimated, with confidence intervals, by a least squares based inverse solution algorithm. Magnetic resonance (MR) images of the brain were acquired witha 1.5 T system using a standard head coil. The superior temporal gyri(STG) were manually segmented from 1.7 mm thick coronal images, and the superior surfaces were then rendered from the 3-D volume data. Translation and rotation matrices were identified to locate the magnetoencephalography (MEG) determined sources within the reconstructed STGs. This population of 18 STGs in 9 individuals demonstrated two transversegyri in 4 of 9 left hemispheres, and 5 of 9 right hemispheres. All 9 left hemisphere M100 sources were in or included Heschl's gyrus(i) in the confidence intervals. Seven of the 9 included Heschl's gyrus(i) onthe right; the remaining two, both mates, had sources slightly anterior to Heschl's gyrus(i). We conclude that all M100 source location estimates were compatible with an auditory koniocortex source in or adjacent to Heschl's gyri.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/20 alle ore 03:25:17