Dynamics and Hierarchical Encoding of Non-compact Acoustic Categories in Auditory and Frontal Cortex
Dynamics and Hierarchical Encoding of Non-compact Acoustic Categories in Auditory and Frontal Cortex
复制标题
听觉和额叶皮层非紧凑声学类别的动力学和层次编码
DOI:
10.1016/j.cub.2020.02.047
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发表时间:
2020
期刊:
影响因子:
9.2
通讯作者:
Shamma, Shihab A.
中科院分区:
文献类型:
--
作者:
Yin, Pingbo;Strait, Dana L.;Radtke-Schuller, Susanne;Fritz, Jonathan B.;Shamma, Shihab A.
Categorical perception is a fundamental cognitive function enabling animals to flexibly assign sounds into behaviorally relevant categories. This study investigates the nature of acoustic category representations, their emergence in an ascending series of ferret auditory and frontal cortical fields, and the dynamics of this representation during passive listening to task-relevant stimuli and during active retrieval from memory while engaging in learned categorization tasks. Ferrets were trained on two auditory Go-NoGo categorization tasks to discriminate two non-compact sound categories (composed of tones or amplitude-modulated noise). Neuronal responses became progressively more categorical in higher cortical fields, especially during task performance. The dynamics of the categorical responses exhibited a cascading top-down modulation pattern that began earliest in the frontal cortex and subsequently flowed downstream to the secondary auditory cortex, followed by the primary auditory cortex. In a subpopulation of neurons, categorical responses persisted even during the passive listening condition, demonstrating memory for task categories and their enhanced categorical boundaries.
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影响因子:
--
作者:
Cohen YE;Bennur S;Christison-Lagay K;Gifford AM;Tsunada J
通讯作者:
Tsunada J
DOI:
10.1073/pnas.1717075115
发表时间:
2018-07-24
影响因子:
11.1
作者:
Brincat SL;Siegel M;von Nicolai C;Miller EK
通讯作者:
Miller EK
影响因子:
2.5
作者:
Joji Tsunada;J. H. Lee;Y. Cohen
通讯作者:
Joji Tsunada;J. H. Lee;Y. Cohen
DOI:
10.1126/science.aab0551
发表时间:
2015-06-19
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Siegel M;Buschman TJ;Miller EK
通讯作者:
Miller EK
DOI:
10.1121/1.4968395
发表时间:
2016
期刊:
The Journal of the Acoustical Society of America
影响因子:
--
作者:
Yin,Pingbo;Shamma,ShihabA;Fritz,JonathanB
通讯作者:
Fritz,JonathanB