The purpose of this study is to investigate the safety and tolerability of JNJ-64140284 versus placebo after single oral dose administration (ascending dose levels) under fasted condition, to characterize the pharmacokinetics (PK) of JNJ-64140284 in plasma, cerebrospinal fluid (CSF) and urine after single oral dose administration and to investigate the effect of food (high fat/high calorie) on the PK of JNJ-64140284 following single oral dose administration.