18 to 30s, 18-30s, 20, 3 people, 3 persons, 30, 30 to 40, 30s, 40, 40 to 50, 40 to 60, 50, adult, adults, ages, amused, attention, baby boomer, baby boomers, career, co-worker, co-workers, colleague, colleagues, concentrate, concentrating, concentration, consider, considering, consult, consultancy, consultant, consultants, consultation, consultations, consulting, contemplating, contemplation, contemplative, diagnosing, diagnosis, doctor, doctors, doctors office, emotion, emotions, engrossed, equipment, examination, examinations, examining, expression, expressive, female, females, forty to sixty, fortysomething, general practitioner, general practitioners, gentleman, gentlemen, gp, gps, grown up, grown ups, guy, guys, health, health care, healthcare, hold, holding, hospital, hospitals, human brain, image source, imagesource, indicating, inside, interest, interested, interesting, interiors, lady, look, looking, looking at, male, males, man, mature, mature adult, mature adult man, mature adult men, mature man, mature men, medical, medical examination, medical personnel, medical profession, medical professions, medical scan, medical scans, medical science, medical treatment, men, mid adult, mid adult woman, mid adult women, mid adults, middle age, middle aged, middle aged man, middle aged men, mind, mri, mri scan, occupation, occupations, old, olds, paying attention, pen, pens, perception, pharmacology, physician, physicians, pointing, profession, professions, scan, scans, sense, sensory perception, smile, smiles, smiling, someone, stationery, think, thinking, thirtysomething, thought, thoughtful, thoughts, three, three people, three persons, tobacco, treatment, treatments, trio, twenties, twentysomething, woman, women, worker, workers, workmate, workmates, year, young, young adult, young adult woman, young adult women, young adults, young woman, young women, 20s, mri scans, mri-scans, is354