Change in auditory asymmetry with amobarbital: Evidence of cerebral pharmacological asymmetry?

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Abstract
Right-handed subjects (11) were administered a dichotic listening test to assess cerebral hemispheric dominance, both under a drug-free condition and following systemic injection of the barbiturate, amobarbital. The finding of increased right ear advantage during the drug period reflects increased left cerebral dominance and suggests that amobarbital may have an asymmetric, pharmacological effect on the 2 cerebral hemispheres.