الفهرس 
Conversion Disorder Past & Present
Etiology of conversion disorderOnly 14 pages are availabe for public view
 |  | from | 206 |  |  |
| | | from | 206 | | |
Abstract
Summary Conversion disorder (CD) is characterized by neurological symptoms affecting voluntary, motor and sensory function, such as paralysis or tremor, that are incompatible with organic damage to the nervous system .It is a frequent cause for disability, representing approximately 3–5% of all new neurological outpatients .Conversion or functional symptoms are thought to be generated unconsciously, often associated with underlying psychological stressors or trauma. Patients with motor CD typically present with one or a combination of weakness, tremor, jerks, spasms, dystonic postures or an altered gait pattern, having been recognized as a discrete problem for hundreds if not thousands of years, the disability and distress caused by conversion disorder is nearly equivalent to that caused by neurological disease. Despite being amongst the most common diagnoses made in neurology. Functional magnetic resonance imaging (fMRI) is a non-invasive method to measure spontaneous brain activity, such as low-frequency fluctuations in blood oxygen level-Dependent (BOLD) signals, and to identify unique neural activation patterns associated with specific cognitive processes and disease states. Most prior studies on aberrant neural activity patterns in suicide attempters were conducted using task-based BOLD fMRI.. Correlating imaging with specific neural activity is referred to as brain mapping. The ability to observe brain function with MRI during specific tasks and more recently in the resting state is called functional magnetic resonance imaging.