| Autor: |
T, Kato, J, Murashita, T, Shioiri, T, Inubushi, N, Kato |
| Rok vydání: |
1999 |
| Předmět: |
|
| Zdroj: |
Neuropsychobiology. 39(4) |
| ISSN: |
0302-282X |
| Popis: |
To search for a possible relationship between brain energy metabolism and mental fatiguability, 10 normal volunteers were examined by 31P-MRS (phosphorus-31 magnetic resonance spectroscopy) in the occipital cortex during photic stimulation (PS), and Uchida-Kraepelin test (UKT), a standardized serial calculation task, was used for measurement of intraindividual characteristics of mental fatigue in these subjects. More decrease of phosphocreatine measured by 31P-MRS during the PS was significantly associated with more effects of rest assessed by UKT (r = -0.86, p0.005). More decrease in pH after PS was associated with steeper decline of performance (r = 0.78, p0.01). These findings suggest that characteristics of brain energy metabolism in an individual may relate to intrinsic patterns of mental fatigability. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
