Which kind of transition is important for sound representation? An event-related potential study
Which kind of transition is important for sound representation? An event-related potential study
复制标题
哪种过渡对于声音表现很重要？
DOI：
10.1016/j.brainres.2012.04.046
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发表时间：
2012
期刊：
影响因子：
2.9
通讯作者：
Schröger
中科院分区：
文献类型：
--
作者：
Bendixen;Müller;Schröger
假设听觉瞬变（如声音开始或连续声音中的频率转换）将听觉输入解析为更小的单元，从而为每个片段单独形成统一的声音表示。这是通过使用事件相关电位（ERP）的错配负性（MMN）成分发现的，该成分利用听觉感觉记忆表征。对于非结构化的声音，MMN的振幅随着不规则特征（偏差，例如持续时间的减少）相对于正常发生的声音的开始的时间距离的增加而减少甚至消失，而对于被瞬态声音分割的声音，MMN持续存在。据推测，P1-N1-P2复合体，索引瞬时的感觉编码，决定了由信息处理系统表示的声输入的时间单位。为了验证这一假设，我们利用了先前报道的在恒定频率和滑动频率段之间物理上相同但时间反向转换的感觉编码中的不对称性。在单独的块中，我们定期呈现1400毫秒的声音，并以中心的恒定到滑动或滑动到恒定的过渡。偶尔和不可预测的是，一个经常出现的声音的持续时间缩短到910ms。我们发现恒定到滑动转换的声音比滑动到恒定转换的声音具有更大的与过渡相关的P1-N1-P2电位，并且伴随着更大的与偏差相关的MMN振幅。这提供了证据，证明这是过渡的精确感官编码，这对于自动将听觉输入解析成更小的单元至关重要，从而能够形成统一的声音表征，即使是后期的片段。
Auditory transients (such as sound onset or a frequency transition within a continuous sound) are assumed to parse the auditory input into smaller units enabling the formation of unitary sound representations separately for each segment. This was discovered by using the mismatch negativity (MMN) component of the event-related potential (ERP) that taps into auditory sensory memory representations. For unstructured sounds, MMN amplitude decreased or even vanished with increasing the temporal distance of an irregular feature (deviance, e.g. duration decrement) relative to the onset of an otherwise regularly occurring sound, whereas for sounds that were segmented by a transient, MMN persisted. It has been speculated that the P1–N1–P2 complex, indexing the sensory encoding of the transient, determines the temporal units of the acoustic input that are represented by the information processing system. To test this hypothesis, we utilized a previously reported asymmetry in the sensory encoding of physically identical but time-reversed transitions between segments of constant and gliding frequency. In separate blocks, we regularly presented 1400-ms sounds with a centered constant-to-glide or glide-to-constant transition. Occasionally and unpredictably, one of the regularly occurring sounds was shortened in duration to 910ms. We found larger transition-related P1–N1–P2 potentials accompanied by larger deviance-related MMN amplitudes for sounds with constant-to-glide transition than for sounds with glide-to-constant transition. This provides evidence that it is the precise sensory encoding of the transition which is crucial for automatically parsing the auditory input into smaller units, thus enabling the formation of unitary sound representations even for late segments.
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对不熟悉的音调模式的感官表征的事件相关电位研究。
影响因子：
3.7
作者：
Erich Schröger
通讯作者：
Erich Schröger
影响因子：
3.7
作者：
MAISTE, A;PICTON, T
通讯作者：
PICTON, T
影响因子：
3
作者：
Viswanathan, Deepa;Jansen, Ben H.
通讯作者：
Jansen, Ben H.
DOI：
10.1016/s0926-6410(01)00027-1
发表时间：
2001-08
期刊：
Brain research. Cognitive brain research
影响因子：
--
作者：
H. Yabe;S. Koyama;Ryusuke Kakigi;Atsuko Gunji;Mari Tervaniemi;Yasuharu Sato;S. Kaneko
通讯作者：
H. Yabe;S. Koyama;Ryusuke Kakigi;Atsuko Gunji;Mari Tervaniemi;Yasuharu Sato;S. Kaneko
人脑中听觉信息整合的频谱时间窗口。
DOI：
--
发表时间：
2003
期刊：
Res Cogn Brain Res 17
影响因子：
--
作者：
Shinozaki N;Yabe H;Sato Y;Hiruma T;Sutoh T;Matsuoka T;Kaneko S
通讯作者：
Kaneko S