Electrocorticographic changes in cats after intoxication with anticholinergic drugs

Atropine sulphate or atropine-methyl-bromide were administered to cats intravenously in a dose of 0.0115 mmol/kg (i.e 4 mg/kg). Electrocorticogram changes were studied. Atropine sulphate caused the classical shift of the electrocorticogram from high-frequency-low-voltage pattern to a low-frequency-high-voltage pattern. We observed no changes of the electrocorticogram after the administration of atropine-methyl-bromide.