By making cuts across different levels of the rabbit brain, the authors show that adrenaline causes electroencephalographic arousal at the midbrain, whereas mescaline and 3,4-dimethoxyphenylethylamine trigger arousal lower in the brainstem, at the medullary level.
Adrenaline produces electroencephalographic arousal at the midbrain level, while mescaline and 3,4-dimethoxyphenylethylamine produce arousal at the medullary level of the brainstem.
Abstract
Transections of the brain of rabbit reveal that electroencephalographic arousal produced by injections of adrenaline takes place at the midbrain level, while mescaline and 3,4-dimethoxyphenylethylamine induce such arousal lower in the brainstem, at the medullary level.