000K  utf8
0500  Ou
1100  $c2002
1500  ger
2051  10.1515/bmte.2002.47.s1b.566
2240  
3000  Husar, Peter
3010  Berkes, Sebastian
3010  Götze, Andreas
3010  Henning, Günter
3010  Plagwitz, Kai-Uwe
4000  Verbesserung des SNR bei mehrkanaligen EEG-Ableitungen  [Husar, Peter]
4060  4 Seiten
4209  The main problem in measurements of the focal VEP (Visual Evoked Potential) is its weak SNR (Signal-to-Noise Ratio). The most common methodfor enhancement of the SNR is the Stimulus synchronized averaging. For study ofsingle responses other ways in SNR improvement are needed. In this contribution a new method based on space-time selective measurement is introduced, which can be interpreted äs beaming a Signal source. Since the anatomical structures of sources generating the focal VEP are known in general and if the electrode positions are of sufficient density over the visual cortex, a source beamer can be realized by controlling the channels' delays.
4950  https://doi.org/10.1515/bmte.2002.47.s1b.566$xR$3Volltext$534
4961  https://www.db-thueringen.de/receive/dbt_mods_00040466
5051  610
5550  beam forming
5550  multichannel processing
5550  sensor array
5550  visual evoked potential