Sharing and integration of cognitive neuroscience data: Metric and pattern matching across heterogeneous ERP datasets

NEUROCOMPUTING

卷:92

Article

Liu, Haishan¹  Frishkoff, Gwen^2,3  Frank, Robert⁴  Dou, Dejing¹ 

[1] Univ Oregon, Dept Comp & Informat Sci, Eugene, OR 97403 USA

[2] Georgia State Univ, Dept Psychol, Atlanta, GA 30303 USA

[3] Georgia State Univ, Inst Neurosci, Atlanta, GA 30303 USA

[4] Univ Oregon, NeuroInformat Ctr, Eugene, OR 97403 USA

关键词: Schema matching;    Cluster comparison;    Assignment problem;    Hungarian method;    Neuroscience;    Electrophysiology;   

DOI  :  10.1016/j.neucom.2012.01.028

来源: Elsevier

【 摘 要 】

In the present paper, we use data mining methods to address two challenges in the sharing and integration of data from electrophysiological (ERP) studies of human brain function. The first challenge, ERP metric matching, is to identify correspondences among distinct summary features (metrics) in ERP datasets from different research labs. The second challenge, ERP pattern matching, is to align the ERP patterns or components in these datasets. We address both challenges within a unified framework. The utility of this framework is illustrated in a series of experiments using ERP datasets that are designed to simulate heterogeneities from three sources: (a) different groups of subjects with distinct simulated patterns of brain activity, (b) different measurement methods, i.e, alternative spatial and temporal metrics, and (c) different patterns, reflecting the use of alternative pattern analysis techniques. Unlike real ERP data, the simulated data are derived from known source patterns, providing a gold standard for evaluation of the proposed matching methods. Using this approach, we demonstrate that the proposed method outperforms well-known existing methods, because it utilizes cluster-based structure and thus achieves finer-grained representation of the multidimensional (spatial and temporal) attributes of ERP data. (c) 2012 Elsevier B.V. All rights reserved.

【 授权许可】

Free