Our latest experimental results verify some previous tentative conclusions that mental and physical fatigue cause an increase in O's resistance which is fairly uniform but presents still some anomalous cases. Blood pressure almost uniformly increases. We have also perfected the device which photographs the deflections obtained from the Hathaway apparatus.
Proceedings of the Iowa Academy of Science
©1931 Iowa Academy of Science, Inc.
Ruckmick, Christian A.
"Some Recent Improvements in the Galvanic Techniques,"
Proceedings of the Iowa Academy of Science, 38(1), 229-299.
Available at: https://scholarworks.uni.edu/pias/vol38/iss1/77