Anesthesiology
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Cellular Registration without Behavioral Recall of Olfactory Sensory Input under General Anesthesia.
Previous studies suggest that sensory information is "received" but not "perceived" under general anesthesia. Whether and to what extent the brain continues to process sensory inputs in a drug-induced unconscious state remain unclear. ⋯ Histologically distinguishable registration of sensory processing continues to occur at the cellular level under ketamine-xylazine general anesthesia despite the absence of behavioral recognition, consistent with the notion that general anesthesia causes disintegration of information processing without completely blocking cellular communications.
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Comment Letter
Interscalene brachial plexus blocks and phrenic nerve palsy.