Toposcope

an instrument that records the distribution of levels of bioelectric potentials at several dozen points on the body at any given time. The points are projected on the screen of a kinescope and appear in the form of spots of varying brightness. The position of these spots corresponds to the position of the discharging electrodes on the body of the animal or person under investigation. Filming of the toposcope’s findings makes it possible to observe the dynamics of the potentials’ changes over a period of time. When an electroencephaloscope is used instead of a to-poscope, 50 to 100 points of the brain’s bioelectric activity may be studied.

REFERENCES

Livanov, M. N., and V. N. Anan’ev. Elektroentsefaloskopiia. Moscow, 1959.
Amirov, R. Z. Integral’nye topogrammy potentsialov serdtsa. Moscow, 1973.

Toposcope

1. An instrument for measuring the curvature of the surfaces of a contact lens, based on moiré fringes. A bar pattern is reflected from the lens surface and the reflected image is viewed with a microscope that has a second bar pattern in the eyepiece. The two bar patterns superimposing each other at slightly different orientations create the moiré patterns. The magnification of the microscope is changed until the fringes are parallel to the central index line seen in the field and a dial monitoring this change in magnification indicates the radius of curvature in millimetres. 2. See non-invasive break-up time test. See back optic zone radius; radiuscope.

单词	toposcope
释义	Toposcope Toposcope an instrument that records the distribution of levels of bioelectric potentials at several dozen points on the body at any given time. The points are projected on the screen of a kinescope and appear in the form of spots of varying brightness. The position of these spots corresponds to the position of the discharging electrodes on the body of the animal or person under investigation. Filming of the toposcope’s findings makes it possible to observe the dynamics of the potentials’ changes over a period of time. When an electroencephaloscope is used instead of a to-poscope, 50 to 100 points of the brain’s bioelectric activity may be studied. REFERENCES Livanov, M. N., and V. N. Anan’ev. Elektroentsefaloskopiia. Moscow, 1959. Amirov, R. Z. Integral’nye topogrammy potentsialov serdtsa. Moscow, 1973. Toposcope Toposcope 1. An instrument for measuring the curvature of the surfaces of a contact lens, based on moiré fringes. A bar pattern is reflected from the lens surface and the reflected image is viewed with a microscope that has a second bar pattern in the eyepiece. The two bar patterns superimposing each other at slightly different orientations create the moiré patterns. The magnification of the microscope is changed until the fringes are parallel to the central index line seen in the field and a dial monitoring this change in magnification indicates the radius of curvature in millimetres. 2. See non-invasive break-up time test. See back optic zone radius; radiuscope.
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