Auditory suppression and frequency selectivity in older and younger adults.
Auditory suppression and frequency selectivity in older and younger adults.
复制标题
老年人和年轻人的听觉抑制和频率选择性。
DOI：
--
复制
发表时间：
1998
影响因子：
2.4
通讯作者：
S. E. Gehr
中科院分区：
文献类型：
--
作者：
M. Sommers;S. E. Gehr
通过比较年轻和老年正常听力听者在2 kHz时同时屏蔽和前向屏蔽获得的听觉过滤器形状，研究了听觉抑制的年龄差异。为了补偿前向掩蔽的衰减，使用掩蔽函数的增长将由陷波噪声掩蔽器获得的阈值转换为具有相同阈值的连续噪声带的水平。虽然两个年龄组的等效矩形带宽（ERBs）在前向掩蔽中都较小，但年轻人从同时掩蔽到非同时掩蔽的变化明显更大。对年轻听众滤波器的低（Pl）和高（Pu）频率侧的测量表明，从同时屏蔽到前向屏蔽后，两侧的斜率都增加了，但高频侧表现出明显更大的锐化。相比之下，老年人的过滤器斜率（上和下）在两种掩蔽程序之间没有差异。研究结果反映了听觉抑制可能存在的年龄差异。然而，同样值得注意的是，关于同时屏蔽和前向屏蔽导出的滤波器形状之间差异的结论仅限于用转换（如上所述）阈值确定的滤波器参数。
Age differences in auditory suppression were examined by comparing auditory-filter shapes obtained with simultaneous and forward masking at 2 kHz in young and elderly normal-hearing listeners. To compensate for the decay of forward masking, growth of masking functions were used to transform thresholds obtained with a notched-noise masker to the level of a continuous noise band that would give the same threshold values. Although both age groups exhibited smaller equivalent rectangular bandwidths (ERBs) when the filters derived from transformed thresholds were obtained with forward masking, the change from simultaneous to nonsimultaneous masking was significantly greater for young adults. Measures of the low- (Pl) and high- (Pu) frequency sides of the filters for young listeners indicated that the slopes of both sides increased following a change from simultaneous to forward masking but that the high-frequency side exhibited significantly greater sharpening. Filter slopes (both upper and lower) for older adults, in contrast, did not differ between the two masking procedures. The findings from the study are discussed as reflecting possible age differences in auditory suppression. However, it is also noted that conclusions regarding differences between filter shapes derived with simultaneous and forward masking are limited to filter parameters determined with transformed (as described above) thresholds.
影响因子：
2.4
作者：
DELGUTTE, B
通讯作者：
DELGUTTE, B
80 个正常听力耳朵在 2000 Hz 时的听觉滤波器不对称性。
DOI：
10.1121/1.416068
发表时间：
1996
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Wright,BA
通讯作者：
Wright,BA