Auditory lateralization in monkeys: an examination of two cues serving directional hearing.
Auditory lateralization in monkeys: an examination of two cues serving directional hearing.
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猴子的听觉偏侧化：对定向听觉的两种线索的检查。
DOI：
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发表时间：
1979
影响因子：
2.4
通讯作者：
G. Gourevitch
中科院分区：
文献类型：
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作者：
D. Houben;G. Gourevitch
在分配双耳持续时间差（相位）作为低频定位的线索，双耳强度差作为高频定位的线索时，双工理论成功地解释了人类对音调的定向听觉。猴子对这些线索的敏感性在两个实验中进行了检查。在三只猴子（M.线虫属）。实验I中的频率范围为125 Hz至8 kHz，实验II中的频率范围为250 Hz至2 kHz。结果表明，双重理论适用于猴子。然而，猴子对这两种双耳线索的敏感度都不如人。猴子辨别的最短时间差异在1.5 kHz时为42微秒，最小强度差异在500 Hz时为3.5 dB。本研究结果与定位测量结果吻合良好[C. H. Brown等人，J. Acoust.美国社会63，1484-1492（1978）]表明：（a）猴子通过比人更高的频率利用时间差异线索;以及（B）猴子在高频下的不准确定位反映了对耳间强度线索的敏感性降低。
In assigning binaural ongoing time differences (phase) as the cue for localization of low frequencies, and binaural intensity differences as the cue for localization of high frequencies, the duplex theory has successfully accounted for human directional hearing of tones. Sensitivity of monkeys to these cues was examined in two experiments. The dependencies on frequency of interaural intensity difference thresholds (lateralization experiment I) and time difference thresholds (lateralization experiment II) were determined behaviorally on three monkeys (M. nemestrina). The range of frequencies was from 125 Hz to 8 kHz in experiment I and from 250 Hz to 2 kHz in experiment II. The results indicate that the duplex theory is applicable to monkeys. However, monkeys are less sensitive than man to both binaural cues. The shortest time disparity monkeys discriminate is 42 microseconds at 1.5 kHz and the smallest intensity difference is 3.5 dB at 500 Hz. Good agreement between the present findings and localization measurements [C. H. Brown et al., J. Acoust. Soc. Am. 63, 1484-1492 (1978)] suggests: (a) that monkeys utilize time disparity cues through higher frequencies than man; and (b) that inaccurate localization by monkeys at high frequencies reflects decreasing sensitivity to interaural intensity cues.