title: Unsolved issues around critical periods with emphasis on clinical application.
authors.forename: R J
authors.initials: RJ
authors.lastname: Ruben
mesh_terms: D000161:Acoustic Stimulation; D003423:Critical Period, Psychological; D003638:Deafness / Q000503:physiopathology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007804:Language Development; D012683:Sensory Deprivation; D013060:Speech / Q000502:physiology; D014831:Voice