has subject area Adult Diagnostic Techniques, Neurological - Electroencephalography Diagnostic Techniques, Neurological - Reflex, Startle Electrodiagnosis - Electroencephalography Electrodiagnosis - Electromyography Female Hemodynamics Humans Male Molecular Mechanisms of Pharmacological Action - Nicotinic Agonists Myography - Electromyography Nervous System Physiological Phenomena - Reflex, Startle Physical Examination - Reflex, Startle Physiological Effects of Drugs - Nicotinic Agonists Psychological Phenomena - Reflex, Startle Pyridines - Nicotine Smoking Solanaceous Alkaloids - Nicotine