title: Self vs. other: neural correlates underlying agent identification based on unimodal auditory information as revealed by electrotomography (sLORETA).
abstract: Recent neuroscientific studies have identified activity changes in an extensive cerebral network consisting of medial prefrontal cortex, precuneus, temporo-parietal junction, and temporal pole during the perception and identification of self- and other-generated stimuli. Because this network is supposed to be engaged in tasks which require agent identification, it has been labeled the evaluation network (e-network). The present study used self- versus other-generated movement sounds (long jumps) and electroencephalography (EEG) in order to unravel the neural dynamics of agent identification for complex auditory information. Participants (N=14) performed an auditory self-other identification task with EEG. Data was then subjected to a subsequent standardized low-resolution brain electromagnetic tomography (sLORETA) analysis (source localization analysis). Differences between conditions were assessed using t-statistics (corrected for multiple testing) on the normalized and log-transformed current density values of the sLORETA images. Three-dimensional sLORETA source localization analysis revealed cortical activations in brain regions mostly associated with the e-network, especially in the medial prefrontal cortex (bilaterally in the alpha-1-band and right-lateralized in the gamma-band) and the temporo-parietal junction (right hemisphere in the alpha-1-band). Taken together, the findings are partly consistent with previous functional neuroimaging studies investigating unimodal visual or multimodal agent identification tasks (cf. e-network) and extent them to the auditory domain. Cortical activations in brain regions of the e-network seem to have functional relevance, especially the significantly higher cortical activation in the right medial prefrontal cortex.
authors.affiliation: German Sport University Cologne, Institute of Psychology, Department of Performance Psychology, Cologne, Germany. Electronic address: c.justen@dshs-koeln.de.
authors.forename: C
authors.initials: C
authors.lastname: Justen
authors.affiliation: University of Tübingen, Department of Psychiatry, Tübingen, Germany; University of Tübingen, Department of Biomedical Magnetic Resonance, Tübingen, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Herbert
authors.affiliation: German Sport University Cologne, Institute of Psychology, Department of Performance Psychology, Cologne, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Werner
authors.affiliation: German Sport University Cologne, Institute of Psychology, Department of Performance Psychology, Cologne, Germany; London South Bank University, Department of Applied Sciences, London, UK.
authors.forename: M
authors.initials: M
authors.lastname: Raab
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods; D000328:Adult; D001306:Auditory Pathways / Q000502:physiology; D001921:Brain / Q000502:physiology*; D001931:Brain Mapping; D004569:Electroencephalography; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging; D008297:Male; D012649:Self Concept; D055815:Young Adult
keywords: (r)PHG; (r)TMS; (r)TPJ; (repetitive) transcranial magnetic stimulation; (right) medial prefrontal cortex; (right) parahippocampal gyrus; (right) temporo–parietal junction; A1; A2; Ag/AgCl; BA; BOLD; Brodmann area; EEG; EEG source localization; EOG; ERP; Hz; IFG; MNI; Montreal Neurological Institute; PCG; PET; RTs; SDT; STG; V1; agent identification; audition; blood-oxygenation-level-dependent; complex movement sound; dB; dB/oct; decibel; decibel per octave; e-network; electro-oculography; electroencephalography; event-related potential; fMRI; frequency analysis; functional magnetic resonance imaging; hertz; inferior frontal gyrus; kiloOhm; kΩ; microvolt; positron-emission tomography; precentral gyrus; primary auditory cortex; primary visual cortex; rMPFC; rTMS; reaction times; repetitive transcranial magnetic stimulation; sLORETA; secondary auditory cortex; signal detection theory; silver/silver chloride; standardized low-resolution brain electromagnetic tomography; superior temporal gyrus; μV