['insomnia']
['jnj-42847922', 'placebo']

        Inclusion Criteria:

          -  Healthy male and female participants aged between 18 and 65 years, inclusive

          -  Body mass index (BMI) between 18 and 30 kilogram per square meters (kg/m^2) inclusive
             (BMI = weight/height^2)

          -  Insomnia Severity Index (ISI) score more than or equal to (>=) 15 at screening

          -  Insomnia: at screening participants will report both difficulties with sleep onset and
             sleep maintenance. Insomnia will furthermore objectively be established prior to
             enrollment per PSG recorded over 3 consecutive nights. Participants will sleep for 3
             consecutive nights in the sleep center. First and second night data will be used to
             exclude any participant with restless leg syndrome, apnea, parasomnias or other sleep
             disorders. On the second and third night participants are required to meet objective
             inclusion criteria: 2-night mean LPS of >=30 minutes with no night <20 minutes, and on
             both nights TST <=6 hours and wake after sleep onset (WASO) >30 minutes

          -  Participants must be healthy / medically stable on the basis of clinical laboratory
             tests, medical history, vital signs, and 12-lead electrocardiogram (ECG) performed at
             screening and baseline

        Exclusion Criteria:

          -  Participant has current signs/symptoms of, liver or renal insufficiency;
             hypothyroidism or hyperthyroidism, significant cardiac, vascular, pulmonary,
             gastrointestinal, endocrine, neurologic, hematologic, rheumatologic, or metabolic
             disturbances. Participants with non-insulin dependent diabetes mellitus who are
             adequately controlled (not on insulin) may participate in the study

          -  History of epilepsy or fits or unexplained black-outs

          -  Clinically significant abnormal values for hematology, clinical chemistry or
             urinalysis at screening or admission

          -  Clinically significant abnormal physical and neurological examination, vital signs or
             12-lead ECG at screening or baseline

          -  Smoking >=10 cigarettes/daily

          -  Insomnia related to restless leg syndrome, sleep breathing disorder, narcolepsy,
             obstructive sleep apnea/hypopnea, central sleep apnea, sleep-related hypoventilation,
             circadian rhythm sleep-wake disorders, substance/medication-induced sleep disorder or
             parasomnias

          -  Night-shift worker or significantly shifted diurnal activity pattern
      