CO2and the Cephalic Direct Current System: Studies on Humans and a Biophysical Analysis
| Autor: | Murray A. Cowen |
|---|---|
| Rok vydání: | 1976 |
| Předmět: |
Cognitive Neuroscience
Biophysics Experimental and Cognitive Psychology Emissary veins Biophysical Phenomena Veins Developmental Neuroscience Co2 concentration Econometrics medicine Humans Hyperventilation Biological Psychiatry Cerebral Cortex Scalp Endocrine and Autonomic Systems Respiration General Neuroscience Direct current Carbon Dioxide Hydrogen-Ion Concentration Electrophysiology Neuropsychology and Physiological Psychology medicine.anatomical_structure Neurology Psychology Regional differences |
| Zdroj: | Psychophysiology. 13:572-580 |
| ISSN: | 1469-8986 0048-5772 |
| DOI: | 10.1111/j.1469-8986.1976.tb00884.x |
| Popis: | The TCDC/CO, hypothesis is that slowly changing potentials, source resistances and source currents, measured between electrodes placed over specific diploic/emissary vein distributions on the scalp, largely reflect regional differences in subelectrode CO2 concentrations which are in equilibrium with subjacent cortical differences in metabolism and CO2 production. Studies on humans show that TCDC parameters do show the expected relationships with the effects of regional differences in CO2 concentration. An explicit quantitative formulation of the hypothesis is developed based on the best available measures of all essential parameters, and it in shown that this model permits the correct computation of all TCDC empirical norms under essentially all conditions of measurement. Although it now appears that MIX studies have a substantial theoretical foundation it must be emphasized that the analysis in this paper is based on normative—i.e. averaged—values and cannot yet be applied to isolated TCDC measurements on single subjects. |
| Databáze: | OpenAIRE |
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