INCLUSION CRITERIA:
Patients for dissociation study:
-Diagnosis of clinically definite PMD utilizing Fahn and Williams criteria. The diagnosis will be made by a movement disorders neurologist.
-Or a diagnosis of NES based on video-EEG. The diagnosis will be made by an epileptologist.
-Males or females
-Age 18 or older
-Able to provide informed consent
Patients for cognitive study:
-Diagnosis of clinically definite PMD utilizing Fahn and Williams criteria. The diagnosis will be made by a movement disorders neurologist.
-Age 18 or older
-Males or females
-Able to provide informed consent
Normal volunteers for cognitive study:
-Normal volunteers age 18 or older will be included
-Males or females
-Able to provide informed consent
EXCLUSION CRITERIA:
Patients for dissociation study:
-Diagnosis of probable or possible PMD using Fahn and Williams criteria.
-Patients with neurological disorders with elaboration of their underlying disease process including comorbid epilepsy.
-Patients with a medical condition that prevents them from taking part in the study.
-Patients with current suicidal ideation.
-Patients with a psychotic disorder.
-Patients with active substance abuse within the last 6 months.
-Patients below the age of 18.
-Patients who are not capable of consent.
-Patients with an IQ less than 55.
-Patients currently involved in lawsuits.
Patients for cognitive study:
-Diagnosis of probable or possible PMD using Fahn and Williams criteria
-Patients with neurological disorders with elaboration of their underlying disease process including comorbid epilepsy
-Patients with a medical condition that prevents them from taking part in the study.
-Patients with a history of a neurological disorder (e.g. dementia, cerebrovascular accident, neurodegenerative disorder, inflammatory disorders or infections of the central nervous system) that may result in cognitive deficits.
-Patients with a history of traumatic brain injury resulting in loss of consciousness or amnesia lasting for more than a few seconds.
-Patients with a psychotic disorder or bipolar disorder
-Patients with a current major depression
-Patients with current moderate to severe anxiety (Hamilton Anxiety Rating Scale greater than 25)
-Patients with current attention deficit hyperactivity disorder.
-Patients with active substance abuse within the last 6 months.
-Patient with current suicidal ideation.
-Patients below the age of 18.
-Patients who are not capable of consent.
-Patients with an IQ less than 55.
-Patients currently involved in lawsuits.
Normal volunteers for cognitive study:
-Normal volunteers younger than 18 years
-Normal volunteers with an active medical condition that might prevent participation.
-Normal volunteers with a history of neurological disorders (e.g. dementia, cerebrovascular accident, neurodegenerative disorder, inflammatory disorders or infections of the central nervous system) that may result in cognitive deficits
-Normal volunteers with a history of traumatic brain injury resulting in loss of consciousness or amnesia lasting for more than a few seconds
-Normal volunteers with a psychotic disorder or bipolar disorder
-Normal volunteers with a current major depression
-Normal volunteers with moderate to severe anxiety (Hamilton Anxiety Rating Scale greater than 25)
-Normal volunteers with active substance abuse within the last 6 months
-Normal volunteers with current attention deficit hyperactivity disorder
-Normal volunteers with an IQ less than 55
-Normal volunteers who are not capable of consent