Hyperventilation Activation on EEG Recording in Childhood
Version of Record online: 3 AUG 2005
Volume 35, Issue 6, pages 1199–1203, November 1994
How to Cite
Yamatani, M., Konishi, T., Murakami, M. and Okuda, T. (1994), Hyperventilation Activation on EEG Recording in Childhood. Epilepsia, 35: 1199–1203. doi: 10.1111/j.1528-1157.1994.tb01789.x
- Issue online: 3 AUG 2005
- Version of Record online: 3 AUG 2005
- Received August 1993; revision accepted January 1994.
- Cerebral blood flow;
Summary: In 66 children with no neurologic symptoms, we analyzed EEG slowing quantitatively during standardized hyperventilation (HV) activation. [respiration rate (RR) of 30/min, threefold increase of VE, and 4-min duration]. Changes in cerebral blood flow (CBF) and velocity were also monitored in right common carotid artery by Doppler ultrasonic method. Decreases in PCO, and CBF were the fundamental factors producing EEG slowing during HV. The degree of EEG slowing was greater in younger children and well proportional to age with such standardized HV. The decrease in CBF was much greater in younger children at the beginning of HV and may be related to the significant EEG slowing. EEG slowing was not related to the degree of decrease in CBF. The age difference in EEG response to HV in children and adults may be due to the differences in the decrease in the CBF volume and sensitivity of the CNS to the change in CBF.