Temporal integration and stream segregation because of differences in base tones.

IF 1.6 4区医学 Q4 NEUROSCIENCES

Neuroreport Pub Date : 2025-07-02 Epub Date: 2025-05-13 DOI:10.1097/WNR.0000000000002173

Ken Suzutani, Tetsuya Shiga, Hiroshi Hoshino, Ayaka Arakawa, Yuhei Mori, Kazuko Kanno, Yuichi Takahashi, Tomohiro Wada, Aya Sato, Shuntaro Itagaki, Itaru Miura, Hirooki Yabe

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引用次数: 0

Abstract

Background: Humans live surrounded by many sounds and have the ability to filter out various background sounds. It involves stream segregation and temporal integration. When the reference frequency is set to 3000 Hz, stream segregation will precede temporal integration when the frequency difference is 1000 Hz or larger; however, there is no report that examines whether the threshold of frequency difference at which stream segregation occurs before temporal integration is similar to different base tones.

Methods: We created 10 blocks of tone sequences in which high tones and low tones were alternated with a constant stimulus onset asynchrony of 120 ms. In the first group (group A), the frequency of base tones was fixed at 3000 Hz. In the second group (group B), the frequency of base tones was fixed at 2000 Hz. The frequency of pair tones was set at 3000, 2750, 2500, 2250, and 2000 Hz in each block, respectively presented with six blocks of alternating high tones and low tones.

Results: In group A, the mean voltage in response to omission was significantly lower than the mean voltage in response to opposite tones except in the fifth block. On the other hand, in group B, the mean voltage in response to omission was significantly lower than the mean voltage in response to opposite tones in all blocks.

Conclusions: Our results indicated that whether a temporal window of integration or stream segregation is preferred depends on the base tone's Hz.

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由于基音差异造成的时间整合和流隔离。

人类生活在许多声音的包围中，并且有能力过滤掉各种背景声音。它涉及到流分离和时间整合。当参考频率设置为3000 Hz时，当频率差大于1000 Hz时，流分离优先于时间积分；然而，没有报告检查在时间整合之前发生流分离的频率差阈值是否与不同的基音相似。我们创造了10个音调序列块，其中高音调和低音调交替存在120毫秒的持续刺激启动异步。在第一组（A组）中，基本音调的频率固定在3000 Hz。在第二组（B组）中，基本音调的频率固定在2000hz。在每个块中设置对音的频率为3000、2750、2500、2250和2000 Hz，分别呈现6块交替的高、低音调。在A组中，除第5块外，遗漏反应的平均电压显著低于相反音调反应的平均电压。另一方面，在B组中，遗漏反应的平均电压显著低于相反音调反应的平均电压。我们的结果表明，无论是时间窗口的整合或流隔离是首选取决于基音的赫兹。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Neuroreport 医学-神经科学

CiteScore

3.20

自引率

0.00%

发文量

150

审稿时长

1 months

期刊介绍： NeuroReport is a channel for rapid communication of new findings in neuroscience. It is a forum for the publication of short but complete reports of important studies that require very fast publication. Papers are accepted on the basis of the novelty of their finding, on their significance for neuroscience and on a clear need for rapid publication. Preliminary communications are not suitable for the Journal. Submitted articles undergo a preliminary review by the editor. Some articles may be returned to authors without further consideration. Those being considered for publication will undergo further assessment and peer-review by the editors and those invited to do so from a reviewer pool. The core interest of the Journal is on studies that cast light on how the brain (and the whole of the nervous system) works. We aim to give authors a decision on their submission within 2-5 weeks, and all accepted articles appear in the next issue to press.