Semi-Spatiotemporal fMRI Brain Decoding

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TitleSemi-Spatiotemporal fMRI Brain Decoding
Publication TypeConference Paper
Year of Publication2013
Conference Name3rd International Workshop on Pattern Recognition in NeuroImaging
Date Published06/2013
Conference LocationUniversity of Pennsylvania, Philadelphia PA, USA
AbstractFunctional behavior of the brain can be captured using functional magnetic resonance imaging (fMRI). Even though fMRI signals have temporal and spatial structures, most studies have neglected the temporal structure when inferring mental states (brain decoding). This has two main side effects: 1. Degradation in brain decoding performance due to lack of temporal information in the model. 2. Inability to provide temporal interpretability. Few studies have targeted this issue but have had less success due to the burdening challenges related to high feature-to-instance ratio. In this study a novel model is proposed for incorporating temporal information while maintaining a low feature-to-instance ratio. Experimental results show the effectiveness of the model compared to recent novel approaches.
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