Physiology of Volition Studied With Nerve Block
Public ClinicalTrials.gov record NCT01143506. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Background: \- The experience of volition that accompanies voluntary movement can be divided into the sense of will, or deciding to move, and the sense of agency, or feeling that the movement just made was self-generated. Very little is known regarding the neurological origin of this sense of volition. Previous research has shown that a particular part of the brain, the parietal lobe, is involved in our inner sense that we control the movements we make. Researchers are interested in determining if this sense relies on sensory information from moving fingers reaching the parietal lobe. Objectives: \- To determine the brain regions responsible for the sense of volition and the associated sense of agency. Eligibility: \- Healthy right-handed individuals between 18 and 55 years of age. Design: * The study will involve a screening visit and two testing visits. The screening visit will last 30 minutes to 1 hour, and the testing visits will each last 3 to 4 hours. * Participants will be screened with a physical examination and medical history. * At each testing visit, participants will have a brain magnetic resonance imaging (MRI) scan, electroencephalography (EEG), and electromyography (EMG). The MRI scan and EEG will be done during a movement task that involves the thumb, second finger, and fifth finger of one hand. EMG will be used to monitor movements and muscle activity. * During the second testing visit, participants will receive a nerve block using anesthetic, followed by the MRI, EEG, EMG and movement task. The nerve block will temporarily numb and prevent the movement of parts of the hand and fingers. * After the MRI scan and EEG recording, participants will be asked to rate how much control they felt they had over choosing whether to move, and how much control they felt they had in actually making the movements.
Study identification
- NCT ID
- NCT01143506
- Recruitment status
- Withdrawn
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- Not listed
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 18 Years to 55 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- May 31, 2010
- Primary completion
- Not listed
- Completion
- Jan 3, 2012
- Last update posted
- Jul 1, 2017
2010 – 2012
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Institutes of Health Clinical Center, 9000 Rockville Pike | Bethesda | Maryland | 20892 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01143506, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 1, 2017 · Synced Sep 6, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01143506 live on ClinicalTrials.gov.