Simultaneous Assessment of Cerebral Oxygenation and Hemodynamics During a Motor Task
| Autor: | Arno Villringer, José M. Valdueza, Ulrich Dirnagl, Christina Hirth, Hellmuth Obrig |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
medicine.medical_specialty
business.industry Transcranial doppler sonography Hemodynamics Blood flow Motor task medicine.anatomical_structure Cerebral oxygenation Flow velocity Internal medicine medicine.artery Middle cerebral artery medicine Cardiology sense organs skin and connective tissue diseases business Motor cortex |
| Zdroj: | Advances in Experimental Medicine and Biology ISBN: 9781461376897 |
| Popis: | During performance of a sequential finger opposition task we measured changes in regional cerebral blood oxygenation (rCBO) over the motor cortex and blood flow velocity changes (CBFV) in the middle cerebral artery in a combined near-infrared spectroscopy (NIRS) and transcranial Doppler Sonography (TCD) study. Stimulus duration was 60 s followed by a 90 s rest period. During performance of the motor task we observed an increase in [oxy-Hb] a decrease in [deoxy-Hb] and an increase in MCA flow velocity. These changes were significantly more pronounced contralaterally than ipsilaterally to the moving hand. The time course of changes in [oxy-Hb] and CBFV were strikingly similar, showing a pronounced initial over-shoot. |
| Databáze: | OpenAIRE |
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