. Eight lectures on the signs of life from their electrical aspect . /nductorium. Fig. 19.—Frog's eyeball between unpolarisable electrodes for demonstration of the electrical effects of light and of electrical excitation. The circuit from the eye is completed through a compensator, secondary coil, and galvanometer. The arrows through the eyeball and the galvanometer indicate the direction of the initial current and of the normal response. Arrows near the compensator wires indicate the direction of compensating counter-current. a positive electrical response (and that any mechanical dis- turban
. Eight lectures on the signs of life from their electrical aspect . /nductorium. Fig. 19.—Frog's eyeball between unpolarisable electrodes for demonstration of the electrical effects of light and of electrical excitation. The circuit from the eye is completed through a compensator, secondary coil, and galvanometer. The arrows through the eyeball and the galvanometer indicate the direction of the initial current and of the normal response. Arrows near the compensator wires indicate the direction of compensating counter-current. a positive electrical response (and that any mechanical dis- turbance arouses current in the same direction), he naturally thinks of electrical excitation, and expects to find that if the retina is stirred up to activity by such means, it will manifest current in that same positive direction. The ex-
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1903
