title: Spatiotemporal cortical activation underlying self-referencial processing evoked by self-hand.
abstract: Event-related potentials (ERPs) were recorded to explore the electrophysiological correlates of self-referencial processing when subjects were asked to judge whether the stimuli (their hands) were their own or not. ERP results showed that: first, own hand elicited a greater positive component (P350-500) than did other hand in the time window of 350-500 ms, and the generator of P350-500 was localized in the anterior cingulate cortex (ACC), which might be related to retrieval and identification of self-referencial information due to their sensitivity to self-hand. Second, own hand elicited a more positive component (LPC) than did other hand in the later time window. Dipole analysis revealed that the generators were localized in the parahippocampal gyrus and the medial frontal gyrus, which might be involved in making a self-referencial decision based on retrieval of self-hand information.
authors.affiliation: Key Laboratory of Cognition and Personality (SWU), Ministry of Education, School of Psychology, Southwest University (SWU), Chongqing 400715, China.
authors.forename: Yanhua
authors.initials: Y
authors.lastname: Su
authors.forename: Antao
authors.initials: A
authors.lastname: Chen
authors.forename: Huazhan
authors.initials: H
authors.lastname: Yin
authors.forename: Jiang
authors.initials: J
authors.lastname: Qiu
authors.forename: Jieyu
authors.initials: J
authors.lastname: Lv
authors.forename: Dongtao
authors.initials: D
authors.lastname: Wei
authors.forename: Fang
authors.initials: F
authors.lastname: Tian
authors.forename: Shen
authors.initials: S
authors.lastname: Tu
authors.forename: Ting
authors.initials: T
authors.lastname: Wang
mesh_terms: D000704:Analysis of Variance; D001364:Awareness / Q000502:physiology; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000502:physiology*; D004569:Electroencephalography; D004585:Electrooculography; D005071:Evoked Potentials / Q000502:physiology*; D005133:Eye Movements / Q000502:physiology; D007839:Functional Laterality / Q000502:physiology; D006225:Hand; D006801:Humans; D007600:Judgment / Q000502:physiology*; D008297:Male; D055815:Young Adult