Cognition Disorder Clinical Trial
Official title:
Detection of Hemodynamic Changes in Traumatic Brain Injuries Population With Functional Near Infrared Spectroscopy
Background:
- The amount of blood flowing in brain areas goes up when those areas are being used for
activities, such as movement or seeing. Functional magnetic resonance imaging (fMRI) is a
common way of measuring blood flow in the brain. Near infrared spectroscopy (NIRS) can also
be used to study blood flow in the brain. However, NIRS has not been used as often as fMRI.
Researchers want to compare fMRI and NIRS to see whether they give similar results. These
studies will be used to look at people who have had a traumatic brain injury.
Objectives:
- To test how well NIRS measure changes in blood flow in the brain after a traumatic brain
injury.
Eligibility:
- Individuals between 18 and 60 years of age who have had a traumatic brain injury.
- Healthy volunteers at least 18 years of age.
Design:
- Participants will be screened with a physical exam and medical history. Researchers may
ask to see brain images during from previous MRI scans.
- Participants will have a NIRS scan of the brain. They will be asked to do certain tasks
while inside the scanner. These tasks will involve responding to images that appear on a
screen.
- Treatment will not be provided as part of this study.
The goal of this study is to be able to assess frontal lobe function in a rapid, objective,
and standardized way, without the need for expertise in cognitive test administration. Such
methods would be particularly helpful in mild traumatic brain injury, where objective
measures are needed, and would greatly expand the capacity to make such assessments in
standard clinical practice.
Our goal is to recruit 100 subjects total in two groups of age, gender, and education matched
subjects, as follows: TBI (n = 50) and non-TBI (n = 50).
The subject will be asked to perform 2 computer-based cognitive tests while the fNIRS device
is in place. The fNIRS sensor pads will record changes in blood oxy/deoxy hemoglobin
concentrations in the underlying cortex. Data will be stored for post processing analysis.
The main outcome measures will be: 1) a correlation of the fNIRS results between the TBI and
non-TBI groups; 2) a correlation of the fNIRS results with the severity of the TBI within the
TBI group. Finally, we plan to compare individual measurement from TBI patients with the
healthy group.
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