P50 Suppression in Children with Selective Mutism: A Preliminary Report

Autor/inn/en	Henkin, Yael; Feinholz, Maya; Arie, Miri; Bar-Haim, Yair
Titel	P50 Suppression in Children with Selective Mutism: A Preliminary Report
Quelle	In: Journal of Abnormal Child Psychology, 38 (2010) 1, S.43-48 (6 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0091-0627
DOI	10.1007/s10802-009-9346-9
Schlagwörter	Language Impairments; Communication Problems; Children; Brain; Cognitive Processes; Comparative Analysis; Brain Hemisphere Functions; Auditory Perception; Diagnostic Tests; Auditory Stimuli + Suchen Sie Ihr Suchwort? Speech disorder; Speech disorders; Speech disabilities; Speech disability; Speech handicap; Speech handicaps; Speech impairment; Speech impairments; Language handicaps; Sprachbehinderung; Kommunikationsbarriere; Child; Kind; Kinder; Gehirn; Cognitive process; Kognitiver Prozess; Auditive Wahrnehmung; Akustische Wahrnehmung; Akustik; Diagnostic test; Diagnostischer Test; Auditive Stimulation
Abstract	Evidence suggests that children with selective mutism (SM) display significant aberrations in auditory efferent activity at the brainstem level that may underlie inefficient auditory processing during vocalization, and lead to speech avoidance. The objective of the present study was to explore auditory filtering processes at the cortical level in children with SM. The classic paired-click paradigm was utilized to assess suppression of the P50 event-related potential to the second, of two sequentially-presented clicks, in ten children with SM and 10 control children. A significant suppression of P50 to the second click was evident in the SM group, whereas no suppression effect was observed in controls. Suppression was evident in 90% of the SM group and in 40% of controls, whereas augmentation was found in 10% and 60%, respectively, yielding a significant association between group and suppression of P50. P50 to the first click was comparable in children with SM and controls. The adult-like, mature P50 suppression effect exhibited by children with SM may reflect a cortical mechanism of compensatory inhibition of irrelevant repetitive information that was not properly suppressed at lower levels of their auditory system. The current data extends our previous findings suggesting that differential auditory processing may be involved in speech selectivity in SM. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10