| Infants' localization of sounds in the median vertical plane: estimates of minimum audible angle. | |
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MedLine Citation:
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PMID: 3585247 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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B A Morrongiello; P T Rocca |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of experimental child psychology Volume: 43 ISSN: 0022-0965 ISO Abbreviation: J Exp Child Psychol Publication Date: 1987 Apr |
Date Detail:
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Created Date: 1987-07-01 Completed Date: 1987-07-01 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 2985128R Medline TA: J Exp Child Psychol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 181-93 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Auditory Perception* Auditory Threshold* Child Development Child Psychology* Female Humans Infant Male Sound Localization* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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