ABSTRACT
The purpose of the present investigation was to measure olfactory sensitivity by determining the thresholds for odor identification before and after the various brain operations described in the preceding chapters. With the possible exception of those cases undergoing transorbital lobotomy it was not expected that impairment in acuity would occur. In this operation the cutting instrument might damage the area shown by previous research to be critical for olfaction, viz., the olfactory bulbs, to such an extent as to leave the patient anosmic or with markedly reduced sensitivity. It is doubtful whether damage to other parts of the complicated olfactory pathway would have any measurable effect on thresholds.
