Memory and motor control in patients with psychogenic nonepileptic seizures.
- Resource Type
- Academic Journal
- Authors
- Dienstag A; Neuropsychiatry Clinic, Hadassah Medical Center, Jerusalem, Israel; Department of Psychiatry, Hadassah Hebrew University Medical Center, Jerusalem, Israel.; Ben-Naim S; Neuropsychiatry Clinic, Hadassah Medical Center, Jerusalem, Israel; School of Behavioral Sciences, Academic College Tel-Aviv-Jaffa, Tel-Aviv, Israel.; Gilad M; Neuropsychiatry Clinic, Hadassah Medical Center, Jerusalem, Israel.; Ekstein D; Department of Neurology, Agnes Ginges Center for Neurogenetics, Hadassah Hebrew University Medical Center, Jerusalem, Israel.; Arzy S; Neuropsychiatry Clinic, Hadassah Medical Center, Jerusalem, Israel; Neuropsychiatry Laboratory, Department of Medical Neurosciences, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel; Department of Neurology, Agnes Ginges Center for Neurogenetics, Hadassah Hebrew University Medical Center, Jerusalem, Israel.; Eitan R; Neuropsychiatry Clinic, Hadassah Medical Center, Jerusalem, Israel; Department of Psychiatry, Hadassah Hebrew University Medical Center, Jerusalem, Israel; Functional Neuroimaging Laboratory, Brigham and Women's Hospital, Department of Psychiatry, Harvard Medical School, Boston, MA, USA. Electronic address: renanaeitan@gmail.com.
- Source
- Publisher: Academic Press Country of Publication: United States NLM ID: 100892858 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1525-5069 (Electronic) Linking ISSN: 15255050 NLM ISO Abbreviation: Epilepsy Behav Subsets: MEDLINE
- Subject
- Language
- English
Psychogenic nonepileptic seizures (PNES) are of the most elusive phenomena in epileptology. Patients with PNES present episodes resembling epileptic seizures in their semiology yet lacking the underlying epileptic brain activity. These episodes are assumed to be related to psychological distress from past trauma, yet the underlying mechanism of this manifestation is still unknown. Using resting-state functional magnetic resonance imaging (fMRI), we investigated functional connectivity changes within and between large-scale brain networks in 9 patients with PNES, compared with a group of 13 age- and gender-matched healthy controls. Functional magnetic resonance imaging analyses identified functional connectivity disturbances between the medial temporal lobe (MTL) and the sensorimotor cortex and between the MTL and ventral attention networks in patients with PNES. Within network connectivity reduction was found within the visual network. Our findings suggest that PNES relate to changes in connectivity in between areas that are involved in memory processing and motor activity and attention control. These results may shed new light on the way by which traumatic memories may relate to PNES.
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