Detection of acoustic temporal fine structure by cochlear implant listeners: behavioral results and computational modeling.
Detection of acoustic temporal fine structure by cochlear implant listeners: behavioral results and computational modeling.
复制标题
DOI：
10.1016/j.heares.2013.01.004
复制
发表时间：
2013-04
期刊：
影响因子：
2.8
通讯作者：
Rubinstein, Jay T.
中科院分区：
文献类型：
--
作者：
Imennov, Nikita S.;Won, Jong Ho;Drennan, Ward R.;Jameyson, Elyse;Rubinstein, Jay T.
A test of within-channel detection of acoustic temporal fine structure (aTFS) cues is presented. Eight cochlear implant listeners (CI) were asked to discriminate between two Schroeder-phase (SP) complexes using a two-alternative, forced-choice task. Because differences between the acoustic stimuli are primarily constrained to their aTFS, successful discrimination reflects a combination of the subjects’ perception of and the strategy’s ability to deliver aTFS cues. Subjects were mapped with single-channel Continuous Interleaved Sampling (CIS) and Simultaneous Analog Stimulation (SAS) strategies. To compare within- and across- channel delivery of aTFS cues, a 16-channel clinical HiRes strategy was also fitted. Throughout testing, SAS consistently outperformed the CIS strategy (p ≤ 0.002). For SP stimuli with F0 =50 Hz, the highest discrimination scores were achieved with the HiRes encoding, followed by scores with the SAS and the CIS strategies, respectively. At 200 Hz, single-channel SAS performed better than HiRes (p = 0.022), demonstrating that under a more challenging testing condition, discrimination performance with a single-channel analog encoding can exceed that of a 16-channel pulsatile strategy. To better understand the intermediate steps of discrimination, a biophysical model was used to examine the neural discharges evoked by the SP stimuli. Discrimination estimates calculated from simulated neural responses successfully tracked the behavioral performance trends of single-channel CI listeners.
登录
查看更多内容
影响因子：
2.4
作者：
Doman, MF;Smith, LM;Parkin, JL
通讯作者：
Parkin, JL
影响因子：
2.4
作者：
Dooling, RJ;Leek, MR;Dent, ML
通讯作者：
Dent, ML
DOI：
10.1007/s10162-007-0107-6
发表时间：
2008-03-01
影响因子：
2.4
作者：
Drennan, Ward R.;Longnion, Jeff K.;Rubinstein, Jay T.
通讯作者：
Rubinstein, Jay T.
影响因子：
3.7
作者：
Grewe J;Weckström M;Egelhaaf M;Warzecha AK
通讯作者：
Warzecha AK
影响因子：
3.7
作者：
Kang R;Nimmons GL;Drennan W;Longnion J;Ruffin C;Nie K;Won JH;Worman T;Yueh B;Rubinstein J
通讯作者：
Rubinstein J