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History of the study of the level of constant potential of the brain

SCP is one of the oldest, if not “ancient” electrophysiological indicators. As early as 1827, L. Nobile described the so-called “frog current”, which spread from the limbs to the head. In humans, the direction of such currents

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SCP is one of the oldest, if not “ancient” electrophysiological indicators. As early as 1827, L. Nobile described the so-called “frog current”, which spread from the limbs to the head. In humans, the direction of such currents

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Analysis of the origin of SCP when registering electrical activity from the brain

According to experimental data obtained on animals, the surface of the cortex is positively charged (1.5 – 20 mV) with respect to the electrically indifferent points, for which skull bones were most often chosen . In adult rats, the SCP

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According to experimental data obtained on animals, the surface of the cortex is positively charged (1.5 – 20 mV) with respect to the electrically indifferent points, for which skull bones were most often chosen . In adult rats, the SCP

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The role of the blood-brain barrier in the generation of a constant brain potential level

Let us turn to the consideration of those experiments in which the AMR arising on the BBB is studied. Anatomically, the BBB is a complex of capillary endothelial cells with their basement membrane and an adjacent

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Let us turn to the consideration of those experiments in which the AMR arising on the BBB is studied. Anatomically, the BBB is a complex of capillary endothelial cells with their basement membrane and an adjacent

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The presence of a positive potential difference of the brain

The presence of a positive difference in brain potentials with respect to blood of approximately 4 mV and its sensitivity to blood pH have been shown by many researchers in experiments on different types of

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The presence of a positive difference in brain potentials with respect to blood of approximately 4 mV and its sensitivity to blood pH have been shown by many researchers in experiments on different types of

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Potentials of vascular origin

To complete the picture, we consider the potentials of vascular origin, which can contribute to the magnitude of SCP. Partially, we touched on this issue when considering the potential of the BBB. The potential difference arises not

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To complete the picture, we consider the potentials of vascular origin, which can contribute to the magnitude of SCP. Partially, we touched on this issue when considering the potential of the BBB. The potential difference arises not

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The form of distribution of SCP over the surface of the head

An important issue is the correspondence of the topographic distribution of SCP on the scalp and the surface of the brain. Currently, there are ideas that the veins on the surface of the hemispheres and the diploic

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An important issue is the correspondence of the topographic distribution of SCP on the scalp and the surface of the brain. Currently, there are ideas that the veins on the surface of the hemispheres and the diploic

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Types of Constant Potentials

Constant potentials differ depending on whether they are detected by polarizable or non-polarizable electrodes. In the first case, the true difference of electric potentials between any regions is recorded, and in the second, the potentials of

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Constant potentials differ depending on whether they are detected by polarizable or non-polarizable electrodes. In the first case, the true difference of electric potentials between any regions is recorded, and in the second, the potentials of

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SCP registration principles and possible artifacts

To register the SCP of the brain, direct current amplifiers are required, which make it possible to measure the potential difference of the millivolt range and its changes in the time range of a second

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To register the SCP of the brain, direct current amplifiers are required, which make it possible to measure the potential difference of the millivolt range and its changes in the time range of a second

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Modern equipment for studying constant potentials

The domestic and foreign medical industry produces devices designed to record the slow electrical activity of the brain. These are mainly various printing systems. To date, not a single specialized device for registration of soft starters has

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The domestic and foreign medical industry produces devices designed to record the slow electrical activity of the brain. These are mainly various printing systems. To date, not a single specialized device for registration of soft starters has

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SCP registration procedure

Registration of SCP is performed monopolar in five leads: from the lower frontal, central, occipital, as well as the right and left temporal areas of the head (points Fpz, Cz, Oz, Td, Ts according to

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Registration of SCP is performed monopolar in five leads: from the lower frontal, central, occipital, as well as the right and left temporal areas of the head (points Fpz, Cz, Oz, Td, Ts according to

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