Sentence:  The emotional states produced by drugs influence the <WSD>cortical</WSD> potentials in a characteristic manner ; synchrony prevails in the EEG of the experimental animal after administration of tranquilizers , but asynchrony after application of analeptic and psychoactive drugs . 
Meaning of the word marked with <WSD> tags:  (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph