title: Feature analysis for correlation studies of simultaneous EEG-fMRI data: A proof of concept for neurofeedback approaches.
abstract: The identification and interpretation of facial expressions is an important feature of social cognition. This characteristic is often impaired in various neurodevelopmental disorders. Recent therapeutic approaches to intervene in social communication impairments include neurofeedback (NF). In this study, we present a NF real-time functional Magnetic Resonance Imaging (rt-fMRI), combined with electroencephalography (EEG) to train social communication skills. In this sense, we defined the right Superior Temporal Sulcus as our target region-of-interest. To analyze the correlation between the fMRI regions of interest and the EEG data, we transposed the sources located at the nearest cortical location to the target region. We extracted a set of 75 features from EEG segments and performed a correlation analysis with the brain activations extracted from rt-fMRI in the right pSTS region. The finding of significant correlations of simultaneously measured signals in distinct modalities (EEG and fMRI) is promising. Future studies should address whether the observed correlation levels between local brain activity and scalp measures are sufficient to implement NF approaches.
authors.forename: Simões
authors.initials: S
authors.lastname: Simoes
authors.forename: João
authors.initials: J
authors.lastname: Lima
authors.forename: Bruno
authors.initials: B
authors.lastname: Direito
authors.forename: João
authors.initials: J
authors.lastname: Castelhano
authors.forename: Carlos
authors.initials: C
authors.lastname: Ferreira
authors.forename: Paulo
authors.initials: P
authors.lastname: Carvalho
authors.forename: Miguel
authors.initials: M
authors.lastname: Castelo-Branco
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D004569:Electroencephalography / Q000379:methods; D005149:Facial Expression; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008959:Models, Neurological; D058765:Neurofeedback; D010775:Photic Stimulation; D012815:Signal Processing, Computer-Assisted; D013702:Temporal Lobe / Q000502:physiology*; D055815:Young Adult