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Titolo:
Somatosensory, auditory, and visual evoked magnetic fields in patients with brain diseases
Autore:
Nakasato, N; Yoshimoto, T;
Indirizzi:
Tohoku Univ, Sch Med, Dept Neurosurg, Aoba Ku, Sendai, Miyagi 9808574, Japan Tohoku Univ Sendai Miyagi Japan 9808574 Ku, Sendai, Miyagi 9808574, Japan
Titolo Testata:
JOURNAL OF CLINICAL NEUROPHYSIOLOGY
fascicolo: 2, volume: 17, anno: 2000,
pagine: 201 - 211
SICI:
0736-0258(200003)17:2<201:SAAVEM>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
MEDIAN NERVE-STIMULATION; HEMISPHERIC-ASYMMETRY; MYOCLONUS EPILEPSY; CENTRAL SULCUS; TEMPORAL-LOBE; CORTEX; HAND; LOCALIZATION; CORTICES; P100;
Keywords:
magnetoencephalography; evoked magnetic field; functional brain mapping; somatosensory evoked potential; auditory evoked potential; visual evoked potential;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
65
Recensione:
Indirizzi per estratti:
Indirizzo: Nakasato, N Tohoku Univ, Sch Med, Dept Neurosurg, Aoba Ku, 1-1 Seiryo-machi, Sendai, Miyagi 9808574, Japan Tohoku Univ 1-1 Seiryo-machi Sendai MiyagiJapan 9808574 Japan
Citazione:
N. Nakasato e T. Yoshimoto, "Somatosensory, auditory, and visual evoked magnetic fields in patients with brain diseases", J CL NEURPH, 17(2), 2000, pp. 201-211

Abstract

The features of somatosensory (SEFs), auditory (AEFs), and visual evoked fields (VEFs) in healthy subjects and patients with brain diseases provide the basis for clinical investigations using magnetoencephalography (MEG). The SEFs provide clinically useful information to identify the central sulcusand somatotopic organization of the primary somatosensory cortex. Localization accuracy of the SEFs can be tested by cortical stimulation during surgery. Functional reorganization suggested by SEF studies must be verified byother modalities. The AEFs can localize the auditory cortex in the bilateral temporal lobes. Separation of bilateral activities is much clearer in AEFs than in auditory evoked potentials. Modulation of the interhemispheric differences of latency, amplitude, and source localization of AEFs can be used to evaluate auditory function in patients with intracranial lesions. Pattern reversal VEFs provide stable localization of the primary visual function. Separation of bihemispherical activities is the advantage of VEFs over visual evoked potentials. Investigation of VEFs provides objective evaluation of visual field deficits such as homonymous or bitemporal hemianopsia inpatients with intracranial lesions. Evoked magnetic fields can provide useful diagnostic information. Such clinical findings, in turn, provides the opportunity to test the source estimation accuracy of MEG.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 03:11:58