PMID- 25438747 OWN - NLM STAT- MEDLINE DCOM- 20150723 LR - 20141202 IS - 1973-8102 (Electronic) IS - 0010-9452 (Linking) VI - 60 DP - 2014 Nov TI - Neural overlap between resting state and self-relevant activity in human subcallosal cingulate cortex--single unit recording in an intracranial study. PG - 139-44 LID - S0010-9452(14)00299-8 [pii] LID - 10.1016/j.cortex.2014.09.008 [doi] AB - High activity of the default mode network (DMN) has been proposed to be central in processing self-relevant events. Thus far, this hypothesis of DMN function has not been tested directly using neurophysiological techniques. To test for the link between frontal midline DMN activity and self-relevant processing we measured neuronal activity (single-neurons' firing rates) in human subcallosal cingulate cortex (SCC) in the course of Deep Brain Stimulation surgery. We find that firing rates in SCC did not change during the presentation of specifically self-relevant stimuli when compared to the preceding pre-stimulus resting state level. In contrast, we observed significant changes in firing rates during other names in SCC. Such rest-self overlap seems to be specific for SCC since increase in firing rates in response to self-relevant stimuli were observed in another region, the subthalamic nucleus, in a group of Parkinson patients receiving deep brain stimulation surgery. These results suggest specific relationship between resting state and self-related activity, rest-self overlap, in specifically SCC as core region of the default-mode network. CI - Copyright (c) 2014 Elsevier Ltd. All rights reserved. FAU - Lipsman, Nir AU - Lipsman N AD - Division of Neurosurgery, Toronto Western Hospital, University of Toronto, Canada. FAU - Nakao, Takashi AU - Nakao T AD - Institute of Biomedical & Health Sciences, Hiroshima University, Japan. FAU - Kanayama, Noriaki AU - Kanayama N AD - Graduate School of Arts and Sciences, Department of General Systems Studies, University of Tokyo, Japan. FAU - Krauss, Joachim K AU - Krauss JK AD - Department of Neurosurgery, Medizinische Hochschule, Hannover, Germany. FAU - Anderson, Adam AU - Anderson A AD - Department of Psychology, University of Toronto, Canada. FAU - Giacobbe, Peter AU - Giacobbe P AD - Division of Psychiatry, Toronto General Hospital, University of Toronto, Canada. FAU - Hamani, Clement AU - Hamani C AD - Division of Neurosurgery, Toronto Western Hospital, University of Toronto, Canada. FAU - Hutchison, William D AU - Hutchison WD AD - Department of Physiology, University of Toronto, Canada. FAU - Dostrovsky, Jonathan O AU - Dostrovsky JO AD - Department of Physiology, University of Toronto, Canada. FAU - Womelsdorf, Thilo AU - Womelsdorf T AD - Department of Biology, York University, Canada. FAU - Lozano, Andres M AU - Lozano AM AD - Division of Neurosurgery, Toronto Western Hospital, University of Toronto, Canada. FAU - Northoff, Georg AU - Northoff G AD - Department of Psychiatry, University of Ottawa Institute of Mental Health Research, Canada; Taipei Medical University, Graduate Institute of Humanities in Medicine, Taipei, Taiwan; Taipei Medical University-Shuang Ho Hospital, Brain and Consciousness Research Center, New Taipei City, Taiwan; Centre for Cognition and Brain Disorders (CBBD), Normal University Hangzhou, Hangzhou, China. Electronic address: Georg.northoff@theroyal.ca. LA - eng PT - Journal Article DEP - 20140928 PL - Italy TA - Cortex JT - Cortex; a journal devoted to the study of the nervous system and behavior JID - 0100725 SB - IM MH - Deep Brain Stimulation MH - Depressive Disorder, Major/*physiopathology/therapy MH - Electroencephalography MH - Gyrus Cinguli/*physiology MH - Humans MH - Neurons/*physiology MH - Parkinson Disease/*physiopathology/therapy MH - Rest/*physiology OTO - NOTNLM OT - Deep brain stimulation OT - Default-mode network OT - Resting state OT - Self-relevance OT - Single-unit recording OT - Subcallosal cingulate cortex EDAT- 2014/12/03 06:00 MHDA- 2015/07/24 06:00 CRDT- 2014/12/03 06:00 PHST- 2013/05/02 00:00 [received] PHST- 2013/12/04 00:00 [revised] PHST- 2014/09/11 00:00 [accepted] PHST- 2014/12/03 06:00 [entrez] PHST- 2014/12/03 06:00 [pubmed] PHST- 2015/07/24 06:00 [medline] AID - S0010-9452(14)00299-8 [pii] AID - 10.1016/j.cortex.2014.09.008 [doi] PST - ppublish SO - Cortex. 2014 Nov;60:139-44. doi: 10.1016/j.cortex.2014.09.008. Epub 2014 Sep 28.