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Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses
Published on: January 23, 2017
Sound level-dependent growth of N1m amplitude with low and high-frequency tones
Yoshiharu Soeta1, Seiji Nakagawa
1Institute for Human Science and Biomedical Engineering, National Institute of Advanced Industrial Science and Technology, Midorigaoka, Ikeda, Osaka, Japan. y.soeta@aist.go.jp
Abstract:
The aim of this study was to determine whether the amplitude and/or latency of the N1m deflection of auditory-evoked magnetic fields are influenced by the level and frequency of sound. The results indicated that the amplitude of the N1m increased with sound level. The growth in amplitude with increasing sound level was almost constant with low frequencies (250-1000 Hz); however, this growth decreased with high frequencies (>2000 Hz). The behavior of the amplitude may reflect a difference in the increase in the activation of the peripheral and/or central auditory systems.
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