Abstract
No direct information on brain energetics and energy-related compounds in the first seconds of physiological activation has been reported to date. In this study visual cortex high energy phosphate changes were monitored in 11 normal subjects during 3.5 s activation and the following 23.5 s by a simple 31P magnetic resonance spectroscopic method. An intraactivation decrease of phosphocreatine (PCr) was observed in all subjects, with changes in pH in three, one of them also presenting a change in adenosine triphosphate (ATP). In the subgroup of eight subjects without changes in pH, the mean rate of mean PCr decrease (D(pcr)) was 7.24 ± 0.78 %/s, and the postactivation mean rate of mean PCr recovery was
| Original language | English |
|---|---|
| Pages (from-to) | 878-883 |
| Number of pages | 6 |
| Journal | Magnetic Resonance in Medicine |
| Volume | 38 |
| Issue number | 6 |
| Publication status | Published - Dec 1997 |
Keywords
- Brain activation
- Energetics
- Spectroscopy
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
- Radiological and Ultrasound Technology