Characterizing synchrony patterns across cognitive task stages of associative recognition memory

被引:13
|
作者
Portoles, Oscar [1 ]
Borst, Jelmer P. [1 ]
van Vugt, Marieke K. [1 ]
机构
[1] Univ Groningen, Dept Artificial Intelligence & Cognit Engn, Nijenborgh 9, NL-9747 AG Groningen, Netherlands
基金
欧洲研究理事会;
关键词
associative recognition memory; cognitive functions; connectivity; EEG; hidden semi-Markov models; neural oscillations; HUMAN WORKING-MEMORY; RECALL-TO-REJECT; PHASE-SYNCHRONIZATION; PROCESSING STAGES; ELECTROPHYSIOLOGICAL DATA; SUSTAINED ATTENTION; INTEGRATED THEORY; BRAIN POTENTIALS; THETA; OSCILLATIONS;
D O I
10.1111/ejn.13817
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Numerous studies seek to understand the role of oscillatory synchronization in cognition. This problem is particularly challenging in the context of complex cognitive behavior, which consists of a sequence of processing steps with uncertain duration. In this study, we analyzed oscillatory connectivity measures in time windows that previous computational models had associated with a specific sequence of processing steps in an associative memory recognition task (visual encoding, familiarity, memory retrieval, decision making, and motor response). The timing of these processing steps was estimated on a single-trial basis with a novel hidden semi-Markov model multivariate pattern analysis (HSMM-MVPA) method. We show that different processing stages are associated with specific patterns of oscillatory connectivity. Visual encoding is characterized by a dense network connecting frontal, posterior, and temporal areas as well as frontal and occipital phase locking in the 4-9 Hz theta band. Familiarity is associated with frontal phase locking in the 9-14 Hz alpha band. Decision making is associated with frontal and temporo-central interhemispheric connections in the alpha band. During decision making, a second network in the theta band that connects left-temporal, central, and occipital areas bears similarity to the neural signature for preparing a motor response. A similar theta band network is also present during the motor response, with additionally alpha band connectivity between right-temporal and posterior areas. This demonstrates that the processing stages discovered with the HSMM-MVPA method are indeed linked to distinct synchronization patterns, leading to a closer understanding of the functional role of oscillations in cognition.
引用
收藏
页码:2759 / 2769
页数:11
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