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Great Moments in Physiology

WILDER PENFIELD

Until recently, brain operations were performed without general anesthesia. Brain tissue is not sensitive to pain (when we say that the head hurts, it hurts really are the cerebral arteries, and wraps the brain or meninges), so it was not necessary to sleep the patient. Local anesthesia is applied to open the scalp and skull, and then operated in the brain with the conscious patient. At that time , general anesthesia was some risk, so it is only used when absolutely necessary, and therefore not used in these operations (now general anesthesia has less risk, and usually yes the patient is sleeping to operate the brain)


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