Document Detail

Infants' localization of sounds in the median vertical plane: estimates of minimum audible angle.
MedLine Citation:
PMID:  3585247     Owner:  NLM     Status:  MEDLINE    
Infants 6, 9, 12, 15, and 18 months of age were seated in a dark room directly facing an array of nine loudspeakers positioned along the median vertical plane. One loudspeaker was positioned at ear level, 0 degree, and four others each were positioned above and below 0 degree. To examine infants' resolution of auditory space in the median vertical plane we sought to determine the smallest angular shift in the vertical location of a sound that infants could reliably detect (i.e., minimum audible angle). A two-alternative forced-choice procedure was used in which a sequence of white noise bursts was presented initially at 0 degree, and then shifted vertically (i.e., above or below 0 degree) and continued to be presented until the infant made a directional response; correct responses were visually reinforced. The smallest angular shift in vertical location that was reliably detected systematically decreased with increasing age between 6 months (15 degrees) and 18 months (4 degrees), suggesting a finer partitioning of auditory space along the vertical axis over this age range. By 18 months infants' performance matched that of a group of adults tested under the same circumstances.
B A Morrongiello; P T Rocca
Related Documents :
1132277 - Frequency discrimination by young infants.
488697 - Infant visual habituation as a function of exposure time and stimulus similarity.
18007197 - Orientation and motion-specific visual cortex responses in infants born preterm.
15845247 - Saliency and context play a role in infants' texture segmentation.
21237587 - Amplitude-integrated electroencephalography in preterm infants with cystic periventricu...
17626147 - Defining the gap between electrographic seizure burden, clinical expression and staff r...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of experimental child psychology     Volume:  43     ISSN:  0022-0965     ISO Abbreviation:  J Exp Child Psychol     Publication Date:  1987 Apr 
Date Detail:
Created Date:  1987-07-01     Completed Date:  1987-07-01     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2985128R     Medline TA:  J Exp Child Psychol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  181-93     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Auditory Perception*
Auditory Threshold*
Child Development
Child Psychology*
Sound Localization*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  The development of selective attention: holistic perception versus resource allocation.
Next Document:  A developmental study of timing behavior in 4 1/2- and 7-year-old children.