. Eight lectures on the signs of life from their electrical aspect . C A Excitation from B to A (B is anodic) Response outgoing at B Excitation from A to B (B is kathodic) Response outgoing at B Excitation from B to A (A is kathodic) Response outgoing at A Excitation from A to B (A is anodic) Response outgoing at A FlG. 46.—Cat's paw (24 hours post-mortem), A, B, C, as indicated above. Ex- citation by tetanising currents. Berne coil. Two Leclanches. 10,000 units. The response is always of the nature of an outgoing current at A, and at B for both direc- tions of excitation. with the keyboard an
. Eight lectures on the signs of life from their electrical aspect . C A Excitation from B to A (B is anodic) Response outgoing at B Excitation from A to B (B is kathodic) Response outgoing at B Excitation from B to A (A is kathodic) Response outgoing at A Excitation from A to B (A is anodic) Response outgoing at A FlG. 46.—Cat's paw (24 hours post-mortem), A, B, C, as indicated above. Ex- citation by tetanising currents. Berne coil. Two Leclanches. 10,000 units. The response is always of the nature of an outgoing current at A, and at B for both direc- tions of excitation. with the keyboard and galvanometer. You will see, if you trace out the connections, that, with the switch in the first position, deflection to your right means current from B to A, that in the position IIB it means current from B to C, and that in the posi- tion IIA it means current from C to A. By a glance at the swatch and reverser, you can therefore recognise the direction of excitation and the direction of response at B or at A ; and it will be a perfectly simple matter to work through the four tests
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