軽・中等度感音難聴児の言語および構音の発達 0.5・1・2・4kHzとの関係について

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  • Language and Articulation developments in Mild and Moderate Hearing Impaired Children.

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The relation between language (articulation) ability and hearing levels at each frequency (500⋅1000⋅2000⋅4000Hz) was studied in 92 cases (5-12 years) with mild and moderate sensorineural hearing impairment, who had neither any auditory training nor hearing aid.<br>The results obtained were as follows.<br>(1) The children with hearing levels below 25dB at 500⋅1000⋅2000Hz and over 50dB at 4000Hz, exhibited normal language development. But almost all of them exhibited articulation disorders.<br>(2) Many children with hearing levels below 25dB at 500⋅1000Hz and over 50dB at 2000⋅4000Hz, exhibited normal language development. But almost all of them exhibited articulation disorders.<br>(3) The children with hearing levels below 25dB at 500Hz and over 50dB at 1000⋅2000⋅4000Hz, exhibited language retardation and articulation disorders.<br>(4) Many children with hearing levels of 40-60dB at 1000⋅2000Hz and below 25dB at 4000Hz, exhibited language retardation. But a few children exhibited articulation disorders.<br>(5) Many children with hearing loss at 1000⋅2000⋅4000Hz more than 40dB, exhibited language retardation and articulation disorders.

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