Agaeva M Iu
Zh Vyssh Nerv Deiat Im I P Pavlova. 2010 May-Jun;60(3):303-8.
The buildup of echo suppression for noise bursts in the band of 5-18 kHz was studied. Durations of the bursts were 5, 10, 20 and 100 ms. Test stimulus were preceded by a train of stimuli. The stimulus was a noise burst pair, in which the lead burst was presented from either the left (+45 deg) or right (-45 deg) side, and the lag burst was presented from the opposite side. The train consisted of 10 stimuli. The echo delays were 1, 2, 4, 8, 16, 32, 64 and 125ms. The echo threshold was measured as the minimum echo delay at which subjects reported hearing one sound rather than two sounds. The average echo thresholds were significantly elevated for all durations of bursts for buildup condition. However, despite the fact that the average threshold was slightly higher in case of the right-side lead signal presentation than that in case of its left-side presentation, there was no significant difference for the signals of 5, 10, 20, and 100 ms in duration (p > 0.05).
研究了5 - 18kHz频段噪声突发的回声抑制增强情况。突发持续时间为5、10、20和100毫秒。测试刺激之前有一系列刺激。刺激是一对噪声突发，其中先导突发从左侧（+45度）或右侧（-45度）呈现，滞后突发从相反侧呈现。这一系列由10个刺激组成。回声延迟为1、2、4、8、16、32、64和125毫秒。回声阈值被测量为受试者报告听到一个声音而非两个声音时的最小回声延迟。对于增强条件下所有突发持续时间，平均回声阈值均显著升高。然而，尽管右侧先导信号呈现时的平均阈值略高于左侧呈现时，但对于持续时间为5、10、20和100毫秒的信号，差异不显著（p>0.05）。
