Neurophysiological correlates of dissociative symptoms
| Autor: | Geert Langereis, Albert P. Aldenkamp, Pierre J. M. Cluitmans, Loe Feijs, Walter H. Backes, R.H.C. Lazeron, Nynke M.G. Bodde, Evelien Carrette, Paul Boon, Sylvie J.M. van der Kruijs, Paul A. M. Hofman, Jacobus F.A. Jansen, Kristl Vonck |
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| Přispěvatelé: | Signal Processing Systems, Promovendi MHN, MUMC+: DA BV Medisch Specialisten Radiologie (9), Beeldvorming, MUMC+: DA BV Klinisch Fysicus (9), Klinische Neurowetenschappen, RS: MHeNs - R1 - Cognitive Neuropsychiatry and Clinical Neuroscience |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
medicine.drug_class
Neurophysiology Dissociative Disorders Electroencephalography Dissociative Neuroimaging Functional Imaging Functional neuroimaging Heart Rate medicine Humans Dissociative disorders Eeg Somatisation Disorder Resting state fMRI medicine.diagnostic_test Functional Neuroimaging Suggestibility Brain medicine.disease Brain Waves Functional imaging Psychiatry and Mental health Surgery Neurology (clinical) Nervous System Diseases Psychology Hypnosis Clinical psychology |
| Zdroj: | Journal of Neurology, Neurosurgery & Psychiatry, 85(2), 174-179. BMJ Publishing Group Journal of Neurology Neurosurgery and Psychiatry, 85(2), 174-179. BMJ Publishing Group |
| ISSN: | 1468-330X 0022-3050 |
| DOI: | 10.1136/jnnp-2012-302905 |
| Popis: | Objective Dissociation is a mental process with psychological and somatoform manifestations, which is closely related to hypnotic suggestibility and essentially shows the ability to obtain distance from reality. An increased tendency to dissociate is a frequently reported characteristic of patients with functional neurological symptoms and syndromes (FNSS), which account for a substantial part of all neurological admissions. This review aims to investigate what heart rate variability (HRV), EEG and neuroimaging data (MRI) reveal about the nature of dissociation and related conditions. Methods Studies reporting HRV, EEG and neuroimaging data related to hypnosis, dissociation and FNSS were identified by searching the electronic databases Pubmed and ScienceDirect. Results The majority of the identified studies concerned the physiological characteristics of hypnosis; relatively few investigations on dissociation related FNSS were identified. General findings were increased parasympathetic functioning during hypnosis (as measured by HRV), and lower HRV in patients with FNSS. The large variety of EEG and functional MRI investigations with diverse results challenges definite conclusions, but evidence suggests that subcortical as well as (pre)frontal regions serve emotion regulation in dissociative conditions. Functional connectivity analyses suggest the presence of altered brain networks in patients with FNSS, in which limbic areas have an increased influence on motor preparatory regions. Conclusions HRV, EEG and (functional) MRI are sensitive methods to detect physiological changes related to dissociation and dissociative disorders such as FNSS, and can possibly provide more information about their aetiology. The use of such measures could eventually provide biomarkers for earlier identification of patients at risk and appropriate treatment of dissociative conditions. |
| Databáze: | OpenAIRE |
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