Basmisanil Positron Emission Tomography Study in Japanese Volunteers

Inclusion Criteria: * Male or female Japanese healthy volunteer, who was born in Japan, has 4 ethnically Japanese grandparents and has lived outside Japan for no longer than 5 years * A body mass index (BMI, Quetelet index) in the range 18.0 to 32.0 kilograms per square meter (kg/m\^2) * Willingness and ability to comply with study restrictions Exclusion Criteria: * A history of epilepsy, convulsions or significant head injury, or other structural brain abnormality * Pregnant or lactating or not using acceptable contraception * Presence or history of severe adverse reaction to any drug or a history of sensitivity to basmisanil or the PET radioligand (RO15-4513) * Significant exposure to radiation within the previous 12 months * Any other clinically relevant abnormalities, concomitant diseases or ongoing medical conditions