Expressed Emotion, Social Cognition
Conditions
Keywords
Mirror neurons, Imitation, Oxytocin
Brief summary
The purpose of this project is to investigate the possible effect of intranasally administered Oxytocin (OT) on specific mirror neuron areas in human brain. The mirror neuron system (MNS) is thought to be involved in action perception and understanding, and may also underlie more complex cognitive processes such as imitation. We will use electroencephalographic (EEG) investigations to examine brain activity while participants complete two different tasks, consisting of the observation and imitation of emotional facial expressions (video presented) and the observation and execution of simple grasping actions (live presented), respectively. In addition, before the beginning of the EEG recording session, subjects will be randomly assigned to two different groups (Oxytocin or Placebo group) and will receive a dose of either intranasal Oxytocin or Placebo solution. Oxytocin is a polypeptide hormone that plays a critical role in social behavior. We will identify mu and beta rhythm from the ongoing EEG and examine suppression as a function of emotion and goal directed action perception and imitation/execution.
Interventions
DRUGOxytocin
The experimental oxytocin group will receive 24 international units (IU) of oxytocin using an intranasal administration (self-administered nasal spray) one time before the experimental session
OTHERPlacebo
The placebo comparator group will receive sterile saline through intranasal administration, consisting of the same salt solution in which the hormone will be dissolved , but lacking the hormone itself.
Sponsors
University of Maryland, College Park
University of Maryland, Baltimore
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
MALE
Age
18 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* Right-hand dominant * Sufficient spoken English so as to be able to complete testing validly and give informed consent
Exclusion criteria
* Currently taking any psychotropic or cognition enhancing medication * History of schizophrenia or any other psychotic disorder, including Bipolar Disorder * Family history of psychosis * Neurological disease or clinically significant head injury * Physical disability that substantially impairs motor function * Current diagnosis of polydypsic-induced hyponatremia * Substance dependence or abuse in the past 6 months
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| EEG mu rhythm suppression | Before oxytocin/placebo administration and 45 minutes after | The EEG mu rhythm suppression is an index of the human mirror neuron system (alpha and lower beta band activity (8-13 and \ 20Hz) recorded over the sensorimotor cortex. EEG will be recorded during the performance of an emotion imitation task (Carr et al., 2003) in which participants will be asked to imitate and internally generate facial emotions seen on a computer screen, or to simply observe, as well as performing a simple grasping action task. Changes in the mu suppression while the performance of these tasks, before and after oxytocin/placebo administration, will be the primary outcome measure. |
Countries
United States
Outcome results
None listed