Different Levels of Category Abstraction by Different Dynamics in Different Prefrontal Areas.
Different Levels of Category Abstraction by Different Dynamics in Different Prefrontal Areas.
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DOI：
10.1016/j.neuron.2018.01.009
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发表时间：
2018-02-07
期刊：
影响因子：
16.2
通讯作者：
Miller EK
中科院分区：
文献类型：
--
作者：
Wutz A;Loonis R;Roy JE;Donoghue JA;Miller EK
Categories can be grouped by shared sensory attributes (i.e. cats) or by a more abstract rule (i.e. animals). We explored the neural basis of abstraction by recording from multi-electrode arrays in prefrontal cortex (PFC) while monkeys performed a dot-pattern categorization task. Category abstraction was varied by the degree of exemplar distortion from the prototype pattern. Different dynamics in different PFC regions processed different levels of category abstraction. Bottom-up dynamics (stimulus-locked gamma power and spiking) in ventral PFC processed more low-level abstractions whereas top-down dynamics (beta power and beta spike-LFP coherence) in dorsal PFC processed more high-level abstractions. Our results suggest a two-stage, rhythm-based model for abstracting categories. Wutz et al. show that different levels of category abstraction engage different oscillatory dynamics in different prefrontal cortex (PFC) areas. This suggests a functional specialization within PFC for low-level, stimulus-based categories (e.g. cats) and high-level, rule-based categories (e.g. animals).
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DOI：
10.1073/pnas.0400162101
发表时间：
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影响因子：
11.1
作者：
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通讯作者：
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影响因子：
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作者：
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