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Jurica, Peter; Struzik, Zbigniew R.; Li, Junhua; Horiuchi, Masahito; Hiroyama, Shuichi; Takahara, Yuji; Nishitomi, Kohei; Ogawa, Koichi; Cichocki, Andrzej
Journal of neuroscience methods, 03/2018, Letnik: 298Journal Article
•Activity from behavioral video recordings can be combined with EEG recordings.•Temporal dynamics of EEG features is analyzed by averaging of temporally aligned EEG and video.•Activity weighted EEG averaging allows reproducible statistical analysis of EEG features. We analyze the dynamics of rodent EEG amplitude in an experiment accompanied by video recordings. Brain activity of animals is commonly acquired together with a video of behavior, but recordings are rarely combined in analysis. The data acquired is most commonly analyzed separately. To our knowledge, no study has used behavior to improve the analysis of EEG waveforms, specifically for artifact removal – other than through manual editing. We explore two approaches: a traditional approach that relies on data preprocessing and artifact rejection by an expert; and an alternative approach that combines analysis of EEG with behavior extracted from video recordings. We use the level of activity extracted from the behavioral video as a measure of confidence in the acquired EEG waveform, and as a weighting factor in averaging and statistical comparisons. We find in analysis of the EEG that the two approaches lead to similar conclusions, but the analysis leveraging behavioral data achieves this while avoiding many subjective choices often required for artifact rejection and data preprocessing. The methods we describe allow for the inclusion of all recorded data in the analysis, thereby making statistical tests more friendly to interpretation, and making the data processing transparent and reproducible.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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