And most researchers now accept that the evidence linking marijuana to abnormal brain waves vanishes when people with psychiatric problems, illnesses or a history of general drug abuse are excluded from studies.

• 现在大多数研究人员赞同，如果研究中排除了有精神问题、疾患或是普通毒品滥用既往史的对象，证明大麻和异常脑波相关的证据也就不复存在了。