SummaryThe sources of auditory evoked electric and magnetic responses were modelled with multiple current dipoles. The activity at the auditory cortices, 2.6 cm beneath the skull, explains the observed
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field distribution. An additional current source near the vertex is needed to explain the corresponding potential distributions. The locations of the current sources of
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did not show any systematic dependence on the tonal frequency.RiassuntoLe sorgenti di risposte uditive magnetiche ed electtriche stimolate sono state formate con dipoli a corrente multipli. L’attività a livello delle cortecce uditive, 2.6 cm al di sotto della calotta cranica, spiega la distribuzione di campo osservata
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. Un’ulteriore sorgente di corrente vicino al vertice è necessaria per spiegare le corrispondenti distribuzioni di potenziale. La posizione delle sorgenti di corrente di
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non ha mostrato alcuna dipendenza sistematica dalla frequenza tonale.
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