Tremblay Kelly L, Billings Curtis J, Friesen Lendra M, Souza Pamela E
Department of Speech and Hearing Sciences, University of Washington, Seattle, Washington 98105, USA.
Ear Hear. 2006 Apr;27(2):93-103. doi: 10.1097/01.aud.0000202288.21315.bd.
To determine if (1) evoked potentials elicited by amplified speech sounds (/si/ and /[symbol: see text]/) can be recorded reliably in individuals, (2) amplification alters neural response patterns, and (3) different amplified speech sounds evoke different neural patterns.
Cortical evoked potentials were recorded in sound field from seven normal-hearing young adults in response to naturally produced speech tokens /si/ and /[symbol: see text]/ from the Nonsense Syllable Test. With the use of a repeated-measures design, subjects were tested and then retested within an 8-day period in both aided and unaided conditions.
(1) Speech-evoked cortical potentials can be recorded reliably in individuals in both aided and unaided conditions. (2) Hearing aids that provide a mild high-frequency gain only subtly enhance peak amplitudes relative to unaided cortical recordings. (3) If the consonant-vowel boundary is preserved by the hearing aid, it can also be detected neurally, resulting in different neural response patterns for /si/ and /[symbol: see text]/.
Speech-evoked cortical potentials can be recorded reliably in individuals during hearing aid use. A better understanding of how amplification (and device settings) affects neural response patterns is still needed.
确定（1）放大语音（/si/和/[符号：见文本]/）诱发的诱发电位能否在个体中可靠记录，（2）放大是否会改变神经反应模式，以及（3）不同的放大语音是否会诱发不同的神经模式。
在声场中记录了7名听力正常的年轻成年人对无意义音节测试中自然产生的语音标记/si/和/[符号：见文本]/的皮质诱发电位。采用重复测量设计，在8天内对受试者在助听和未助听条件下进行测试，然后重新测试。
（1）在助听和未助听条件下，个体均可可靠记录语音诱发的皮质电位。（2）仅提供轻度高频增益的助听器相对于未助听的皮质记录仅轻微增强峰值幅度。（3）如果助听器保留了辅音 - 元音边界，也可通过神经检测到，导致/si/和/[符号：见文本]/的神经反应模式不同。
在使用助听器期间，个体可可靠记录语音诱发的皮质电位。仍需要更好地了解放大（和设备设置）如何影响神经反应模式。
