Auditory streaming emerges from fast excitation and slow delayed inhibition.
Auditory streaming emerges from fast excitation and slow delayed inhibition.
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DOI：
10.1186/s13408-021-00106-2
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发表时间：
2021-05-03
影响因子：
2.3
通讯作者：
Rankin J
中科院分区：
文献类型：
--
作者：
Ferrario A;Rankin J
在听觉流范式中，纯音的交替序列可以被理解为一个单一的飞驰节奏（整合）或两个低音调和高音调分离的序列（分离）。尽管研究了几十年，强调这种声音感知分组的神经机制仍然是一个谜。为了确定捕获这种现象的合理的最小神经回路，我们提出了一个具有两个周期性强迫神经群的放电率模型，该模型由快速直接激励和缓慢延迟抑制耦合。通过分析非光滑、慢快状态下的模型，我们解析地证明了丰富的动态状态库及其参数相关跃迁的存在性。我们施加合理的参数限制，并将所有状态与感知解释联系起来。与每个感知相关联的状态所占据的刺激参数区域与行为实验中发现的区域相匹配。我们的模型表明，在分离过程中，缓慢的抑制掩盖了对后续音调的感知（前向掩蔽），而快速的激发能够整合两个音调之间的大音高差异。在线版本包含补充材料，可在10.1186/s13408-021-00106-2获得。
In the auditory streaming paradigm, alternating sequences of pure tones can be perceived as a single galloping rhythm (integration) or as two sequences with separated low and high tones (segregation). Although studied for decades, the neural mechanisms underlining this perceptual grouping of sound remains a mystery. With the aim of identifying a plausible minimal neural circuit that captures this phenomenon, we propose a firing rate model with two periodically forced neural populations coupled by fast direct excitation and slow delayed inhibition. By analyzing the model in a non-smooth, slow-fast regime we analytically prove the existence of a rich repertoire of dynamical states and of their parameter dependent transitions. We impose plausible parameter restrictions and link all states with perceptual interpretations. Regions of stimulus parameters occupied by states linked with each percept match those found in behavioural experiments. Our model suggests that slow inhibition masks the perception of subsequent tones during segregation (forward masking), whereas fast excitation enables integration for large pitch differences between the two tones. The online version contains supplementary material available at 10.1186/s13408-021-00106-2.
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影响因子：
34.7
作者：
Bizley, Jennifer K.;Cohen, Yale E.
通讯作者：
Cohen, Yale E.
影响因子：
4.3
作者：
Hackett TA;de la Mothe LA;Camalier CR;Falchier A;Lakatos P;Kajikawa Y;Schroeder CE
通讯作者：
Schroeder CE
DOI：
10.1098/rstb.2000.0769
发表时间：
2001-03-29
影响因子：
6.3
作者：
Bressloff, PC;Cowan, JD;Wiener, MC
通讯作者：
Wiener, MC
影响因子：
2.4
作者：
CHERRY, EC
通讯作者：
CHERRY, EC
影响因子：
4.3
作者：
Baker, Daniel H.;Richard, Bruno
通讯作者：
Richard, Bruno