使用聚焦和非聚焦电刺激的响度总和。
Loudness summation using focused and unfocused electrical stimulation.
作者信息
Padilla Monica, Landsberger David M
机构信息
House Research Institute, 2100 West 3rd Street, Los Angeles, California 90057
出版信息
J Acoust Soc Am. 2014 Feb;135(2):EL102-8. doi: 10.1121/1.4862877.
With a cochlear implant, when stimulation from multiple channels is interleaved, the perceived loudness is greater than the loudness associated with any of the individual channels presented in isolation. This phenomenon is known as loudness summation. This study examined if loudness summation with monopolar and tripolar stimulation were equivalent at two loudnesses and two spacing configurations. Results suggest that loudness summation is similar for monopolar and tripolar modes. However, larger summation differences were observed for softer sounds and louder sounds with a larger spatial separation. The results are consistent with the idea that loudness summation is dependent on channel interaction and have implications for implementing current-focused processing strategies.
使用人工耳蜗时，当多个通道的刺激交错进行时，所感知到的响度大于单独呈现的任何单个通道所关联的响度。这种现象被称为响度总和。本研究考察了在两种响度和两种间隔配置下，单极和三极刺激的响度总和是否等效。结果表明，单极和三极模式下的响度总和相似。然而，对于较柔和的声音以及空间分离较大的较响亮声音，观察到了更大的总和差异。这些结果与响度总和取决于通道相互作用的观点一致，并且对实施聚焦于电流的处理策略具有启示意义。
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