Experiment 9. Direct Excitation. Similar Observation, more closely taken, with Photographic Records. Berne Coil ; 2 L. ; Tetanisation ; + and - signify outgoing and ingoing.
| A table should appear at this position in the text. See Help:Table for formatting instructions. |
Excitation Time after ( + and denote) decapitation. direction of break.
40 min. 1000 +
Response.
-0-0020
1000-
-0-0013
10000 +
-0-0019
10000-
-o-ooio
90 min.
1000 +
+ trace.
(same pad)
1000-
10000 +
+ trace.
+ 0-0020
10000 -
+ 0-0020
135 min.
1000 +
-0-0020
(fresh pad)
1000-
10000 +
-0-0010
-0-0010
10000-
+ 0-0004, -0-0005
10000 +
+ 0003, -0-0004
10000-
+ 0-0008, - ?
10000 +
+ 0-0010
4| hours
10000 +
+ 0-0016
(same pad)
10000 -
+ 0-0022
24 hours
1000 +
Nil.
(same pad)
1000-
10000 +
Nil.
+ 0-0017
10000 -
+ 0-0013
Similar results were observed in other observations of similar type (as well as in experiments according to the A, B, C plan, vide infra), weak excitation of the fresh pad giving ingoing, and strong excitation outgoing response. Weak subsequent to strong excitation gave no effect, while the latter gave regular outgoing effects.
Twenty -four hours post mortem weak excitation gave no effect ; with strengthened excitation the first visible effect was outgoing, and with strong excitation the outgoing effect was generally larger than on the day of death.
In general the outgoing effect is the far more prominent and regular phenomenon ; the conditions most favourable to manifestation of the less prominent and more evanescent ingoing effect being a fresh skin and not too strong excitation. With lapse of time, or as an imme- diate consequence of strong excitation, the ingoing effect of weak excitation is abolished.
