Aberrant supplementary motor complex and limbic activity during motor preparation in motor conversion disorder
نویسندگان
چکیده
منابع مشابه
Distinct Modulation of Event-Related Potentials during Motor Preparation in Patients with Motor Conversion Disorder
OBJECTIVE Conversion paresis patients and healthy people feigning weakness both exhibit weak voluntary movement without detectable neuropathology. Uniquely, conversion patients lack a sense of conscious awareness of the origin of their impairment. We investigated whether conversion paresis patients show distinct electroencephalographic (EEG) markers associated with their unconscious movement de...
متن کاملEmotional stimuli and motor conversion disorder.
Conversion disorder is characterized by neurological signs and symptoms related to an underlying psychological issue. Amygdala activity to affective stimuli is well characterized in healthy volunteers with greater amygdala activity to both negative and positive stimuli relative to neutral stimuli, and greater activity to negative relative to positive stimuli. We investigated the relationship be...
متن کاملElectrophysiological correlates of motor conversion disorder.
In patients with a functional (psychogenic) paresis, motor conduction tests are, by definition, normal. We investigated whether these patients exhibit an abnormal motor excitability. Four female patients with a functional paresis of the left upper extremity were studied using transcranial magnetic stimulation (TMS). We investigated motor thresholds, intracortical inhibition and intracortical fa...
متن کاملNeural correlates of motor conversion disorder.
Conversion Disorder affects voluntary motor and sensory function and involves unexplained neurological symptoms without an organic cause. Many researchers have attempted to explain how these symptoms arise but the neural correlates associated with Conversion Disorder remain largely unknown to clinicians and neuroscientists alike. This review focuses on investigations of Conversion Disorder (wit...
متن کاملReduced Motor Cortex Activity during Movement Preparation following a Period of Motor Skill Practice
Experts in a skill produce movement-related cortical potentials (MRCPs) of smaller amplitude and later onset than novices. This may indicate that, following long-term training, experts require less effort to plan motor skill performance. However, no longitudinal evidence exists to support this claim. To address this, EEG was used to study the effect of motor skill training on cortical activity ...
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ژورنال
عنوان ژورنال: Movement Disorders
سال: 2011
ISSN: 0885-3185
DOI: 10.1002/mds.23890