title: Beat gestures and postural control in youth at ultrahigh risk for psychosis.
abstract: Beat gestures, rhythmic hand movements that co-occur with speech, appear to be uniquely associated with the cerebellum in healthy individuals. This behavior may also have relevance for psychosis-risk youth, a group characterized by cerebellar dysfunction. This study examined beat gesture frequency and postural sway (a sensitive index of cerebellar functioning) in youth at ultrahigh risk (UHR) for psychosis. Results indicated that decreased beat gesture frequency, but not self-regulatory movement, is associated with elevated postural sway, suggesting that beat gestures may be an important biomarker in this critical population.
authors.affiliation: Northwestern University, Department of Psychology, Evanston, Chicago, IL, USA. Electronic address: juston.osborne@u.northwestern.edu.
authors.forename: K Juston
authors.initials: KJ
authors.lastname: Osborne
authors.affiliation: Texas A&M University, Department of Psychology, College Station, TX, USA; Texas A&M Institute for Neuroscience, College Station, TX, USA.
authors.forename: Jessica A
authors.initials: JA
authors.lastname: Bernard
authors.affiliation: Northwestern University, Department of Psychology, Evanston, Chicago, IL, USA.
authors.forename: Tina
authors.initials: T
authors.lastname: Gupta
authors.affiliation: University of Colorado Boulder, Department of Psychology, Boulder, CO, USA; University of Colorado Boulder, Center for Neuroscience, Boulder, CO, USA.
authors.forename: Derek J
authors.initials: DJ
authors.lastname: Dean
authors.affiliation: University of Maryland Baltimore, Department of Psychology, Baltimore, MD, USA.
authors.forename: Zachary
authors.initials: Z
authors.lastname: Millman
authors.affiliation: Northwestern University, Department of Psychology, Evanston, Chicago, IL, USA.
authors.forename: Teresa
authors.initials: T
authors.lastname: Vargas
authors.affiliation: Northwestern University, Department of Psychology, Evanston, Chicago, IL, USA.
authors.forename: Ivanka
authors.initials: I
authors.lastname: Ristanovic
authors.affiliation: University of Maryland Baltimore, Department of Psychology, Baltimore, MD, USA.
authors.forename: Jason
authors.initials: J
authors.lastname: Schiffman
authors.affiliation: Northwestern University, Department of Psychology, Department of Psychiatry, Institute for Policy Research, Department of Medical Social Sciences, Evanston, Chicago, IL, USA.
authors.forename: Vijay A
authors.initials: VA
authors.lastname: Mittal
mesh_terms: D000293:Adolescent; D000704:Analysis of Variance; D002531:Cerebellum / Q000473:pathology*; D005260:Female; D005868:Gestures; D006801:Humans; D008297:Male; D004856:Postural Balance / Q000502:physiology*; D011569:Psychiatric Status Rating Scales; D011618:Psychotic Disorders / Q000150:complications*; D012678:Sensation Disorders / Q000209:etiology*; D055815:Young Adult
keywords: Cerebellum; Gesture; Postural sway; Prodrome; Psychosis