title: Preparing Laboratory and Real-World EEG Data for Large-Scale Analysis: A Containerized Approach.
abstract: Large-scale analysis of EEG and other physiological measures promises new insights into brain processes and more accurate and robust brain-computer interface models. However, the absence of standardized vocabularies for annotating events in a machine understandable manner, the welter of collection-specific data organizations, the difficulty in moving data across processing platforms, and the unavailability of agreed-upon standards for preprocessing have prevented large-scale analyses of EEG. Here we describe a "containerized" approach and freely available tools we have developed to facilitate the process of annotating, packaging, and preprocessing EEG data collections to enable data sharing, archiving, large-scale machine learning/data mining and (meta-)analysis. The EEG Study Schema (ESS) comprises three data "Levels," each with its own XML-document schema and file/folder convention, plus a standardized (PREP) pipeline to move raw (Data Level 1) data to a basic preprocessed state (Data Level 2) suitable for application of a large class of EEG analysis methods. Researchers can ship a study as a single unit and operate on its data using a standardized interface. ESS does not require a central database and provides all the metadata data necessary to execute a wide variety of EEG processing pipelines. The primary focus of ESS is automated in-depth analysis and meta-analysis EEG studies. However, ESS can also encapsulate meta-information for the other modalities such as eye tracking, that are increasingly used in both laboratory and real-world neuroimaging. ESS schema and tools are freely available at www.eegstudy.org and a central catalog of over 850 GB of existing data in ESS format is available at studycatalog.org. These tools and resources are part of a larger effort to enable data sharing at sufficient scale for researchers to engage in truly large-scale EEG analysis and data mining (BigEEG.org).
authors.affiliation: Qusp Labs, Qusp, San Diego CA, USA.
authors.forename: Nima
authors.initials: N
authors.lastname: Bigdely-Shamlo
authors.affiliation: Swartz Center for Computational Neuroscience, University of California, San Diego, San Diego CA, USA.
authors.forename: Scott
authors.initials: S
authors.lastname: Makeig
authors.affiliation: Department of Computer Science, University of Texas at San Antonio, San Antonio TX, USA.
authors.forename: Kay A
authors.initials: KA
authors.lastname: Robbins
keywords: BCI; EEG; large scale analysis; neuroinformatics