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[Clinico-physiologic study of the adequacy of using rheoencephalography to study cerebrovascular circulation in man]
Fiziologicheskii Zhurnal SSSR Imeni I. M. Sechenova
|April 1, 1980
Insights
Rheoencephaloplethysmography showed increased intracranial blood flow after jugular vein occlusion, specifically detected in the ocular-occipital lead. This method helps measure blood flow changes within the head.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Physiology
Context:
- Investigating cerebral hemodynamics and blood flow.
- Utilizing rheoencephaloplethysmography (r-EEG) for non-invasive measurements.
- Assessing the impact of venous occlusion on intracranial circulation.
Purpose:
- To determine if rheoencephaloplethysmography can detect changes in intracranial blood flow.
- To identify specific lead configurations sensitive to these hemodynamic alterations.
- To quantify the intracranial component of the r-EEG signal.
Summary:
- Rheoencephaloplethysmography demonstrated enhanced intracranial blood flow following bilateral common jugular vein occlusion in humans.
- This effect was predominantly observed in the ocular-occipital lead.
- The intracranial signal component, calculated from current distribution, reached a maximum of 15% in this lead.
Impact:
- Highlights the sensitivity of the ocular-occipital lead in r-EEG for detecting cerebral blood flow modifications.
- Provides a method for quantifying intracranial blood flow dynamics.
- Contributes to understanding cerebrovascular regulation and potential applications in neurological monitoring.
Abstract:
Rheoencephaloplethysmography revealed the increase of impedance specific for enhancement of intracranial blood flow after occlusion of both common jugular veins only in the ocular-occipital lead in humans. The intracranial component of rheoencephalography was calculated from the data of interelectrode current distribution in extra- and intracranial tissues. The maximal value of the current through intracranial tissues reached 15 per cent for the ocular-occipital lead.