Effect of Ablation of Sensory Cortex upon the Threshold to Pain Reaction. ∗

Abstract

Conclusion

Ablation of the sensory cortex alone, or of the sensory and motor cortex, does not raise the threshold to pain reaction. In one animal massive unilateral ablation of the cortex made the animal more sensitive to painful stimuli applied to a body surface projected upon the ablated cortex.

The authors wish to thank the Physiology Department of the College of Medicine for the use of space and of apparatus essential to the performance of these experiments.