Publikation: The auditory evoked sustained field : origin and frequency dependence
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A sound lasting for several seconds is known to elicit a basline shift in electrical and magnetic records. We have studied the dependence of the magnetic field distribution of this "per-stimulatory" sustained field (SF) on tone frequency. Tone bursts of 2 sec duration and 60 dB nHL intensity were presented to 11 subjects at varying interstimulus intervals between 5 and 7 sec. The carrier frequencies of 250, 1000 and 4000 Hz varied randomly from trial to trial. The field distributions obtained are consistent with the view that the auditory evoked sustained field activity originates in the supratemporal cortex. Differences in the locations of equivalent current dipoles of the SF from those of the MlOO wave of the slow auditory evoked field are consistent across subjects. The SF source locations corresponding to stimulus frequencies over an extended frequency range are arranged in a tonotopic manner and support the idea that the sources of the MlOO and the SF are current dipole sheets located on the superior surface of the primary auditory cortex.
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PANTEV, Christo, Carsten EULITZ, Thomas ELBERT, Manfried HOKE, 1994. The auditory evoked sustained field : origin and frequency dependence. In: Electroencephalography and Clinical Neurophysiology. 1994, 90(1), pp. 82-90. Available under: doi: 10.1016/0013-4694(94)90115-5BibTex
@article{Pantev1994audit-10309, year={1994}, doi={10.1016/0013-4694(94)90115-5}, title={The auditory evoked sustained field : origin and frequency dependence}, number={1}, volume={90}, journal={Electroencephalography and Clinical Neurophysiology}, pages={82--90}, author={Pantev, Christo and Eulitz, Carsten and Elbert, Thomas and Hoke, Manfried} }
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