Development of Sound Localization
| Autor: | Makiko Kaga |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Adult
Male Sound localization medicine.medical_specialty Adolescent Loudness Perception media_common.quotation_subject Stimulus (physiology) Audiology Standard deviation Lateralization of brain function Loudness Child Development Hearing Japan Perception Time difference medicine Humans Bilateral Ears Sound Localization Child media_common business.industry Age Factors Equipment Design Child Preschool Pediatrics Perinatology and Child Health Auditory Perception Female business |
| Zdroj: | Pediatrics International. 34:134-138 |
| ISSN: | 1442-200X 1328-8067 |
| Popis: | Perceptual sound localization is determined from differences in time and loudness of signals arriving separately at bilateral ears, with the time difference being the more important one. The author examined the development of sound lateralization using a self-recording device developed by Sato. It measures the sensitivity of sound lateralization on the basis of time and loudness differences separately. Subjects were 59 children aged 2 to 18 years and 12 adults who were audiologically and neurologically normal. Sound stimulus was 500 Hz continuous band noise. (1) The testable rate was increased in children older than the age of 4, and all children over 7 years of age could be tested. (2) Children over 4 years of age could lateralize sound on the basis of time difference. Sensitivity to time differences improved rapidly, showing a steep curve, in children from the ages of 4 to 6, and then increased slowly until adulthood. (3) Sensitivity to loudness differences increased and standard deviation decreased with age. There is a possibility that children aged 4 can discriminate loudness difference almost as well as adults. |
| Databáze: | OpenAIRE |
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